GM862 Product Description
GM862-GPS, GM862-QUAD-PY , GM862-QUAD
80272ST10019a Rev. 4 – 04/08/2006
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
This document is relating to the following products:
GM862-GPS 3 990 250 657
GM862-QUAD
GM862-QUAD-PY
GM862-QUAD
GM862-QUAD-PY
3 990 250 655
3 990 250 656
3 990 250 659
3 990 250 658
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page 2 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
Contents
1
Overview.........................................................................................................................................7
2
General Product Description ........................................................................................................9
2.1
Dimensions .............................................................................................................................................9
2.2
Weight ................................................................................................................................................... 10
2.3
Environmental requirements .............................................................................................................. 11
2.3.1
Temperature range ........................................................................................................................ 11
2.3.2
Vibration Test (non functional)....................................................................................................... 11
2.3.3
RoHS compliance .......................................................................................................................... 11
2.4
Operating Frequency........................................................................................................................... 12
2.5
Transmitter output power ................................................................................................................... 12
2.6
Reference sensitivity........................................................................................................................... 12
2.7
Antennas............................................................................................................................................... 13
2.7.1
GSM Antenna ................................................................................................................................ 13
2.7.2
GPS Antenna ................................................................................................................................. 14
2.7.3
Antenna connector......................................................................................................................... 14
2.8
GPS Module features........................................................................................................................... 15
2.8.1
GPS Specifications ........................................................................................................................ 15
2.8.1.1 GPS Sensitivity .......................................................................................................................... 15
2.8.1.2 GPS Average Power Consumption ........................................................................................... 15
2.8.1.3 GPS Driving ............................................................................................................................... 15
2.8.1.4 GPS NMEA ................................................................................................................................ 15
2.8.1.5 NMEA sentences ....................................................................................................................... 16
2.9
Supply voltage ..................................................................................................................................... 19
2.10
GSM Power consumption ................................................................................................................... 19
2.11
Embodied Battery Charger ................................................................................................................. 19
2.12 User Interface....................................................................................................................................... 20
2.12.1
Speech Coding .............................................................................................................................. 20
2.12.2
SIM Reader.................................................................................................................................... 20
2.12.3
SMS ............................................................................................................................................... 20
2.12.4
Real Time Clock and Alarm ........................................................................................................... 21
2.12.5
Data/fax transmission .................................................................................................................... 21
2.12.6
Local security management........................................................................................................... 21
2.12.7
Call control ..................................................................................................................................... 21
2.12.8
Phonebook..................................................................................................................................... 21
2.12.9
Characters management ............................................................................................................... 21
2.12.10
SIM related functions ................................................................................................................. 21
2.12.11
Call status indication.................................................................................................................. 21
2.12.12
Indication of network service availability.................................................................................... 22
2.12.13
Automatic answer (Voice, Data or FAX).................................................................................... 22
2.12.14
Supplementary services (SS) .................................................................................................... 22
2.12.15
Acoustic signaling ...................................................................................................................... 22
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.12.16
2.12.17
2.12.18
2.13
DTMF tones ............................................................................................................................... 23
Buzzer Output ............................................................................................................................ 23
RF Transmission Monitor........................................................................................................... 23
EMC 24
2.14 Logic level specifications ................................................................................................................... 24
2.14.1
Reset signal ................................................................................................................................... 25
2.15
Audio levels specifications................................................................................................................. 26
2.16
Camera compatibility (EASY CAMERA) ............................................................................................ 27
2.17
ADC Converter (GM862-GPS only) .................................................................................................... 27
2.18
Interface connectors on GM862 modules ......................................................................................... 28
2.19 Mounting the GM862 modules on your Board.................................................................................. 34
2.19.1
Antenna Coaxial cable fixing ......................................................................................................... 34
2.19.2
Precautions .................................................................................................................................... 36
3
Evaluation Kit...............................................................................................................................37
3.1
Evaluation Kit description .................................................................................................................. 38
3.1.1
Power Supply................................................................................................................................. 38
3.1.2
Serial interface ............................................................................................................................... 38
3.1.3
Audio.............................................................................................................................................. 38
3.1.4
GPIO and Leds .............................................................................................................................. 38
3.1.4.1 Telit GM862 Family modules interface connector ..................................................................... 38
4
Service and firmware update......................................................................................................40
4.1
5
Step-by-Step upgrade procedure....................................................................................................... 40
Software Features........................................................................................................................43
5.1
Enhanced Easy GPRS Extension....................................................................................................... 43
5.1.1
Overview ........................................................................................................................................ 43
5.1.2
Easy GPRS definition .................................................................................................................... 44
5.1.2.1 Configuring the GPRS access ................................................................................................... 44
5.1.2.2 Configuring the embedded TCP/IP stack .................................................................................. 44
5.1.2.3 Defining the Internet peer to be contacted ................................................................................ 44
5.1.2.4 Open the connection with the internet host ............................................................................... 45
5.1.2.5 Close the Socket and deactivate the context ............................................................................ 45
5.1.3
Enhanced Easy GPRS Outgoing connection ................................................................................ 45
5.1.3.1 Configuring the GPRS access ................................................................................................... 46
5.1.3.2 Configuring the embedded TCP/IP stack .................................................................................. 46
5.1.3.3 Defining the Internet peer to be contacted ................................................................................ 46
5.1.3.4 Request the GPRS context to be activated ............................................................................... 46
5.1.3.5 Open the connection with the internet host ............................................................................... 47
5.1.3.6 Close the Socket without deactivating the context .................................................................... 47
5.1.4
Enhanced Easy GPRS Incoming Connection ............................................................................... 48
5.1.4.1 Defining the Internet Peer that can contact this device (firewall settings)................................. 48
5.1.4.2 Request the socket connection to be opened in listen .............................................................. 49
5.1.4.3 Receiving connection requests.................................................................................................. 49
5.1.5
FTP Client ...................................................................................................................................... 50
5.1.6
Known limitations........................................................................................................................... 50
5.2
Jammed Detect & Report Extension.................................................................................................. 51
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.2.1
Overview ........................................................................................................................................ 51
5.3
Easy Script Extension - Python interpreter ...................................................................................... 52
5.3.1
Overview ........................................................................................................................................ 52
5.3.2
Python 1.5.2+ Copyright Notice..................................................................................................... 54
5.3.3
Python implementation description................................................................................................ 55
5.3.4
Python core supported features..................................................................................................... 56
5.3.5
Python Build-in Custom Modules................................................................................................... 57
5.4
CMUX .................................................................................................................................................... 58
5.4.1.1 Product architecture................................................................................................................... 58
5.4.1.2 Implementation feature and limitation........................................................................................ 58
5.5
SAP:SIM Access Profile ...................................................................................................................... 59
5.5.1
Product architecture....................................................................................................................... 59
5.5.2
Implementation feature .................................................................................................................. 59
5.5.3
Remote SIM Message Command Description .............................................................................. 59
6
AT Commands .............................................................................................................................61
7
Conformity Assessments ...........................................................................................................69
7.1
GM862-QUAD(P/N:3990250655): Conformity Assessment.............................................................. 71
7.2
GM862-QUAD-PY(P/N:3990250656): Conformity Assessment........................................................ 75
7.3
GM862-QUAD : RoHS certificate ........................................................................................................ 79
7.4
GM862-QUAD-PY : RoHS certificate .................................................................................................. 80
7.5
GE862-GPS : RoHS certificate............................................................................................................ 81
7.6
GM862-QUAD FCC Equipment Authorization................................................................................... 82
7.7
GM862-QUAD-PY: Conformity Assessment ..................................................................................... 83
7.8
GM862-QUAD-PY FCC Equipment Authorization............................................................................. 84
7.9
GM862-GPS: Conformity Assessment .............................................................................................. 85
7.10
GM862-GPS FCC Equipment Authorization...................................................................................... 89
8
SAFETY RECOMMENDATIONS ..................................................................................................90
9
GM862 Family Technical Support ..............................................................................................92
10 Acronyms .....................................................................................................................................93
11 Document Change Log ...............................................................................................................95
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page 5 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
DISCLAIMER
The information contained in this document is proprietary information of Telit Communications S.p.A.
Telit Communications S.p.A. makes every effort to ensure the quality of the information it makes
available. Notwithstanding the foregoing, Telit Communications S.p.A. does not make any warranty as
to the information contained herein, and does not accept any liability for any injury, loss or damage of
any kind incurred by use of or reliance upon the information.
Telit Communications S.p.A. disclaims any and all responsibility for the application of the devices
characterized in this document, and notes that the application of the device must comply with the
safety standards of the applicable country, and where applicable, with the relevant wiring rules.
Telit Communications S.p.A. reserves the right to make modifications, additions and deletions to this
document at any time and without notice.
© 2005 Telit Communications S.p.A.
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page 6 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
Overview
1
The GM862 family gets rich of a new generation of modules such as the GM862-GPS, GM862-QUAD-PY
and GM862-QUAD, which combine the access to digital communication services in GSM 850, 900, DCS
1800, PCS1900 MHz networks with an additional key feature of the integrated GPS receiver (GM862GPS only).
The Telit GM862-GPS includes a 20 channels GPS receiver. It provides all the features of the GM862QUAD version such as Voice, Circuit Switched Data transfer, Phonebook, SMS, four bands GSM
capability, hot removal sensing on board SIM Reader, GPRS Class 10 and battery charger circuitry.
Moreover, the GM862-GPS and GM862-QUAD-PY models, integrate the “EASY SCRIPT “ functionality.
This is a PYTHON engine script interpreter allowing self-controlled operations. With the EASY
SCRIPT feature the GM862-GPS and GM862-QUAD-PY become a finite product, they just need your script
to be run.
The GM862 is specifically designed and developed by Telit for OEM usage and dedicated to portable
data, voice and telematic applications, such as:
•
•
•
•
•
•
•
Telemetry and Telecontrol
Security systems
Vending Machines
POS terminals
Phones and Payphones
Return channel for digital broadcasting
Applications, where the external application processor can be replaced by the PYTHON
engine provide by GM862-GPS or GM862-QUAD-PY
Moreover, for the GM862-GPS:
•
•
Automotive and Fleet Management applications
Position reporting and tracking
All three models supports the following functionalities:
•
•
•
•
EASY GPRS (AT driven embedded TCP/IP protocol stack)
EASY CAMERA (AT driven direct connection CAMERA function)
EASY SCAN (full GSM frequency scanning)
JAMMING DETECT & REPORT (detect the presence of disturbing devices)
From the interface point of view, the GM862-GPS, GM862-QUAD-PY and GM862-QUAD provide the following
features:
•
Full RS232 UART, CMOS level (ASC0) interface for AT commands:
- Auto-bauding from 2.4 up to 57.6 Kbps
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page 7 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
•
•
•
•
•
•
- Fixed baud rate up to 115.2 Kbps
Two wires RS232, CMOS level (ASC1) for PYTHON debug:
SIM card interface, 3 volts and 1.8 volts (GM862-GPS only)
13 x GPIO ports (max)
x A/D converters (GM862-GPS only)
1 x buzzer output
1 x led status output indicator
In order to meet the competitive OEM and vertical market stringent requirements, Telit supports its
customers with a dedicated Technical Support Policy with:
•
•
•
Telit Evaluation Kit EVK2 to help you to develop your application;
a Website with all updated information available;
a high level technical support to assist you in your development;
For more updated information concerning product Roadmap and availability, technical characteristics,
commercial and other issues, please check on the Telit website www.telit.com > Products > Modules.
NOTE: Some of the performances of the Telit GM862 modules depend on the SW version installed on
the module itself.
The Telit GM862 SW group is continuously working in order to add new features and improve the overall
performances.
The Telit GM862 modules are easily upgradeable by the developer using the Telit GM862 module Flash
Programmer.
Furthermore, all the Telit GM862 products have the full conformity assessment against R&TTE.
Telit GM862 Module Pin-to-Pin Upgrade Policy will enable you to include in your application the new and
future products of the GM862 family, allowing you to save your investments and to successfully
penetrate new markets.
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page 8 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2 General Product Description
2.1 Dimensions
The Telit GM862-QUAD-PY and GM862-QUAD modules overall dimension are:
•
•
•
•
Length:
Width:
Thickness:
Volume:
43.9 mm
43.9 mm
6.9 mm
≅ 13 cm3
The layout is shown in the following figure:
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page 9 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
The layout of Telit GM862 GPS module is shown in the following figure:
GPS antenna connector
2.2 Weight
The Telit GM862 Family modules weight is:
with shield
without sheild
weight (gr)
23÷28 gr
16÷21 gr
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page 10 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.3 Environmental requirements
The Telit GM862 modules are compliant with the applicable ETSI reference documentation GSM 05.05
Release1999 ETSI EN300910 V8.4.1
2.3.1 Temperature range
Temperature in normal operating conditions
Temperature in extreme operating conditions*
GM862-QUAD /
GM862-QUAD-PY
–10°C ÷ +55°C
–30°C ÷ +80°C
GM862-GPS
–10°C ÷ +55°C
–30°C
÷
(preliminary)
–30°C ÷ +85°C
+80°C
Temperature in storage conditions
–30°C ÷ +85°C
* Temperature exceeding the range of normal functional conditions can affect the sensitivity, the performance and the
MTBF of the module.
2.3.2 Vibration Test (non functional)
•
•
10 ÷12Hz
ASD = 1.92m 2 /s 3
12 ÷ 150Hz –3dB/oct
2.3.3 RoHS compliance
The GM862-QUAD /QUAD-PY and GM862-GPS are fully RoHS compliant to EU regulation.
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page 11 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.4 Operating Frequency
The operating frequencies in GSM, DCS, PCS modes are conform to the GSM specifications.
Mode
Freq. TX (MHz)
Freq. RX (MHz)
E-GSM900
890.0 - 914.8
880.2 - 889.8
824.2 – 848.8
1710.2 - 1784.8
1850.2 - 1909.8
935.0 - 959.8
925.2 - 934.8
969.2 – 893.8
1805.2 – 1879.8
1930.2 – 1989.8
GSM-850
DCS-1800
PCS-1900
Channels
(ARFC)
0 – 124
975 - 1023
128 - 251
512 – 885
512 - 810
TX - RX offset
45 MHz
45 MHz
45 MHz
95 MHz
80 MHz
2.5 Transmitter output power
GSM–850 / 900
The Telit GM862 modules in GSM–850 / 900 operating mode are of class 4 in accordance with the
specification which determine the nominal 2W peak RF power (+33dBm) on 50 Ohm.
DCS–1800 / PCS–1900
The Telit GM862 modules in DCS–1800/PCS–1900 operating mode are of class 1 in accordance with
the specifications, which determine the nominal 1W peak RF power (+30dBm) on 50 Ohm.
2.6 Reference sensitivity
GSM–850 / 900
The sensitivity of the Telit GM862 modules according to the specifications for the class 4 GSM–850/900
portable terminals is –107 dBm typical in normal operating conditions.
DCS–1800 / PCS-1900
The sensitivity of the Telit GM862 modules according to the specifications for the class 1 portable
terminals DCS-1800 / PCS-1900 is –106 dBm typical in normal operating conditions.
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page 12 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.7 Antennas
2.7.1 GSM Antenna
The antenna that the customer chooses to use, should fulfill the following requirements:
Frequency range
Bandwidth
Gain
Impedance
Input power
VSWR absolute max
VSWR recommended
Depending by frequency band(s) provided by the network
operator, the customer shall use the most suitable antenna
for that/those band(s)
80 MHz in EGSM, 150 MHz if GSM 850, 170 MHz in DCS,
140 MHz PCS band
1.5dBi ≤ Gain < 3dBi
(referenced to l/2 dipole)
50 ohm
> 2 W peak power
<= 10:1
<= 2:1
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page 13 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.7.2 GPS Antenna
The Telit GM862-GPS Transceiver module includes a 50 Ohm MMCX connector for the GPS antenna.
The GPS antenna should fulfil the following requirements:
Frequency range
Power supply
Gain
Impedance
Power consumption
GPS L1 (1575.42 MHz),
3.4 – 4.2 V DC
3 dBi > Gain > 1,5 dBi
50 ohm
20 mA max
2.7.3 Antenna connector
The Telit GM862 Family modules includes a 50 Ohm MMCX coaxial female. On the user application side
the following connector must be used:
a)
Telegärtner
crimp - Order n. J01340A0121
MMCX angle plug
NOTE: be very careful when connecting the Telit GM862 Family modules RF connector. The RF
connector can be damaged if not connected with the proper antenna RF connector. The minimum
number of insertion cycles are recommended.
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page 14 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.8 GPS Module features
The GM862 include a SiRFstarIII™ single chip GPS receiver, that supports real-time location in urban
area and wherever a high sensitivity acquisition is needed. As main features of such GPS receiver, we
can mention:
•
•
•
•
•
High sensitivity for indoor fixes
Extremely fast TTFF’s at low signal levels
Hot starts < 2 seconds
200,000+ effective correlators
Supports 20-Channel GPS
2.8.1 GPS Specifications
2.8.1.1 GPS Sensitivity
Type of Fix
Hot Start (first fix after standby)
Minimum Signal Strength
(Signal Condition For All Satellites)
-159 dBm
2.8.1.2 GPS Average Power Consumption
The typical current consumption of the GPS part of the Telit GM862-GPS modules is:
Stand–by current
1 mArms ±20%
Operating current
70 mArms ±20%, including 50 mA for the GPS hardware and 20 mA
for the antenna LNA
2.8.1.3 GPS Driving
The GPS functions are driven from the GSM BB processor trough a dedicated AT command set
available in a separately specification.
2.8.1.4 GPS NMEA
The GPS data stream (NMEA 0183 format) is also available on the connector (pins 35 and 41 :
TX_GPS and RX_GPS) in RS232 format 8N1, 4800 bps (9600, 19200, 38400, and 57600 bps are
available too).
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.8.1.5 NMEA sentences
The following GPS sentences are available:
GGA - essential fix data which provide 3D location and accuracy data.
$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
Where:
GGA
123519
4807.038,N
01131.000,E
1
Global Positioning System Fix Data
Fix taken at 12:35:19 UTC
Latitude 48 deg 07.038' N
Longitude 11 deg 31.000' E
Fix quality: 0 = invalid
1 = GPS fix (SPS)
2 = DGPS fix
3 = PPS fix
4 = Real Time Kinematic
5 = Float RTK
6 = estimated (dead reckoning) (2.3 feature)
7 = Manual input mode
8 = Simulation mode
08
Number of satellites being tracked
0.9
Horizontal dilution of position
545.4,M
Altitude, Meters, above mean sea level
46.9,M
Height of geoid (mean sea level) above WGS84
ellipsoid
(empty field) time in seconds since last DGPS update
(empty field) DGPS station ID number
*47
the checksum data, always begins with *
If the height of geoid is missing then the altitude should be suspect. Some non-standard
implementations report altitude with respect to the ellipsoid rather than geoid altitude. Some units do
not report negative altitudes at all. This is the only sentence that reports altitude.
VTG - Velocity made good. The gps receiver may use the LC prefix instead of GP if it is emulating
Loran output.
$GPVTG,054.7,T,034.4,M,005.5,N,010.2,K
Where:
VTG
054.7,T
034.4,M
005.5,N
010.2,K
Track made good and ground speed
True track made good
Magnetic track made good
Ground speed, knots
Ground speed, Kilometers per hour
Note that, as of the 2.3 release of NMEA, there is a new field in the VTG sentence at the end just prior
to the checksum.
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page 16 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
GSA - GPS DOP and active satellites. This sentence provides details on the nature of the fix. It
includes the numbers of the satellites being used in the current solution and the DOP. DOP (dilution of
precision) is an indication of the effect of satellite geometry on the accuracy of the fix. It is a unitless
number where smaller is better. For 3D fixes using 4 satellites a 1.0 would be considered to be a
perfect number, however for overdetermined solutions it is possible to see numbers below 1.0.
There are differences in the way the PRN's are presented which can effect the ability of some
programs to display this data. For example, in the example shown below there are 5 satellites in the
solution and the null fields are scattered indicating that the almanac would show satellites in the null
positions that are not being used as part of this solution. Other receivers might output all of the
satellites used at the beginning of the sentence with the null field all stacked up at the end. This
difference accounts for some satellite display programs not always being able to display the satellites
being tracked. Some units may show all satellites that have ephemeris data without regard to their use
as part of the solution but this is non-standard.
$GPGSA,A,3,04,05,,09,12,,,24,,,,,2.5,1.3,2.1*39
Where:
GSA
A
3
Satellite status
Auto selection of 2D or 3D fix (M = manual)
3D fix - values include: 1 = no fix
2 = 2D fix
3 = 3D fix
04,05... PRNs of satellites used for fix (space for 12)
2.5
PDOP (dilution of precision)
1.3
Horizontal dilution of precision (HDOP)
2.1
Vertical dilution of precision (VDOP)
*39
the checksum data, always begins with *
GSV - Satellites in View shows data about the satellites that the unit might be able to find based on its
viewing mask and almanac data. It also shows current ability to track this data. Note that one GSV
sentence only can provide data for up to 4 satellites and thus there may need to be 3 sentences for
the full information. It is reasonable for the GSV sentence to contain more satellites than GGA might
indicate since GSV may include satellites that are not used as part of the solution. It is not a
requirement that the GSV sentences all appear in sequence. To avoid overloading the data bandwidth
some receivers may place the various sentences in totally different samples since each sentence
identifies which one it is.
The field called SNR (Signal to Noise Ratio) in the NMEA standard is often referred to as signal
strength. SNR is an indirect but more useful value that raw signal strength. It can range from 0 to 99
and has units of dB according to the NMEA standard, but the various manufacturers send different
ranges of numbers with different starting numbers so the values themselves cannot necessarily be
used to evaluate different units. The range of working values in a given gps will usually show a
difference of about 25 to 35 between the lowest and highest values, however 0 is a special case and
may be shown on satellites that are in view but not being tracked.
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page 17 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
$GPGSV,2,1,08,01,40,083,46,02,17,308,41,12,07,344,39,14,22,228,45*75
Where:
GSV
2
1
08
Satellites in view
Number of sentences for full data
sentence 1 of 2
Number of satellites in view
01
40
083
46
Satellite PRN number
Elevation, degrees
Azimuth, degrees
SNR - higher is better
for up to 4 satellites per sentence
the checksum data, always begins with *
*75
RMC - NMEA has its own version of essential GPS PVT (position, velocity, time) data. It is called
RMC, The Recommended Minimum, which will look similar to:
$GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,230394,003.1,W*6A
Where:
RMC
123519
A
4807.038,N
01131.000,E
022.4
084.4
230394
003.1,W
*6A
Recommended Minimum sentence C
Fix taken at 12:35:19 UTC
Status A=active or V=Void.
Latitude 48 deg 07.038' N
Longitude 11 deg 31.000' E
Speed over the ground in knots
Track angle in degrees True
Date - 23rd of March 1994
Magnetic Variation
The checksum data, always begins with *
Note that, as of the 2.3 release of NMEA, there is a new field in the RMC sentence at the end just prior
to the checksum.
GLL - Geographic Latitude and Longitude is a holdover from Loran data and some old units may not
send the time and data active information if they are emulating Loran data. If a GPS is emulating
Loran data they may use the LC Loran prefix instead of GP.
$GPGLL,4916.45,N,12311.12,W,225444,A,*31
Where:
GLL
4916.46,N
12311.12,W
225444
A
*31
Geographic position, Latitude and Longitude
Latitude 49 deg. 16.45 min. North
Longitude 123 deg. 11.12 min. West
Fix taken at 22:54:44 UTC
Data Active or V (void)
checksum data
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 18 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.9 Supply voltage
The external power supply must be connected to VBATT signal (see paragraph 2.18,Interface
connectors on GM862) and must fulfil the following requirements:
Nominal operating voltage
Operating voltage range
3.8 V
3.4 V – 4.2 V
NOTE: Operating voltage range must never be exceeded, care must be taken in order to fulfill
min/max voltage requirements and peak current supply.
2.10 GSM Power consumption
The typical current consumption of the Telit GM862 Family modules are:
Power off current (typical)
< 26 μA;
Stand–by current (GSM Idle)
< 17 mArms (< 4 mArms using command AT+CFUN)
Operating current in voice channel
250 mArms ±20% @ typical network conditions
Operating current in voice channel
< 350 mArms / 1.9 Apeak
conditions
Operating current in GPRS class 10
< 700 mArms @ worst network conditions
@ worst network
The total power consumption of GM862-GPS is the sum of the consumptions of GSM and GPS part.
2.11 Embodied Battery Charger
The battery charger is suited for 3.7V Li-Ion rechargeable battery (suggested capacity 500-1000mAH).
The Charger needs only a CURRENT LIMITED power source input and charges the battery directly
through VBATT connector pins.
Battery charger input pin
Battery pins
Battery charger input voltage min
Battery charger input voltage typical
Battery charger input voltage max
Battery charger input current max
Battery type
CHARGE
VBATT, GND
5.0 V
5.5 V
7.0 V
400mA
Li-Ion rechargeable
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page 19 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
NOTE: If embodied battery charger is used, then a LOW ESR capacitor of at least 100μF must be
mounted in parallel to VBATT pin.
NOTE: when power is supplied to the CHARGE pin, a battery must always be connected to the
VBATT pins.
2.12 User Interface
The user interface is managed by AT commands specified on the ITU-T V.250, GSM 07.07 and 07.05
specification.
2.12.1
Speech Coding
The Telit GM862 voice codec supports the following rates:
•
•
•
•
Half Rate.
Full rate,
Enhanced Full Rate
Adaptive Multi Rate
2.12.2
SIM Reader
The Telit GM862-QUAD and QUAD-PY support phase 2 GSM11.14 - SIM 3 volts. Moreover, the GM862-GPS
supports 1,8V SIM too. For 5V SIM operation an external level translator can be added.
The Telit GM862-QUAD,QUAD-PY and GPS have an internal built-in SIM card reader that allows also hot
removal of the SIM sensing. Therefore, the SIM can be extracted and reinserted while the module is
still on, so there's no need for an external SIM housing.
NOTE: the hot removal of the SIM sensing is not supported during power saving mode (+CFUN: 5).
2.12.3
SMS
The Telit GM862 Family modules supports the following SMS types:
•
•
•
Mobile Terminated (MT) class 0 – 3 with signalling of new incoming SMS, SIM full, SMS read
Mobile Originated class 0 – 3 with writing, memorize in SIM and sending
Cell Broadcast compatible with CB DRX with signalling of new incoming SMS.
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page 20 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.12.4
Real Time Clock and Alarm
The Telit GM862 Family modules supports the Real Time Clock and Alarm functions through AT
commands, furthermore an alarm output pin (GPIO6) can be configured to indicate the alarm with a
hardware line output.
2.12.5
Data/fax transmission
As for the data and fax capabilities, the GM862-QUAD,QUAD-PY and GPS support the following:
GPRS Class 8, MS Class 8
GPRS Class 10, MS Class 8.
CSD up to 14.4 Kbps
Fax service, Class 1 Group 3
2.12.6
GM862-QUAD
GM862-QUADPY
GM862-GPS
•
•
•
•
•
•
•
•
•
•
•
•
Local security management
With lock of Subscriber Identity module (SIM), and security code request at power–up.
2.12.7
Call control
Call cost control function.
2.12.8
Phonebook
Function available to store the telephone numbers in SIM memory.
Capability depends on SIM version/memory
2.12.9
Characters management
The GM862 supports the IRA characters set (International Reference Alphabet), in TEXT and PDU
mode.
2.12.10
SIM related functions
The activation and deactivation of the numbers stored in phone book are supported, FDN, ADN and
PINs too. The extension at the PIN2 for the PUK2 insertion capability for lock condition is supported
too.
2.12.11
Call status indication
The call status indication by AT commands is supported.
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page 21 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.12.12
Indication of network service availability
The STAT_LED pin status shows information on the network service availability and Call status. The
pin is an Open Collector output where it is possible to directly connect a LED to show information on
the network service availability and Call status.
Therefore, the status indicated in the following table is reversed with respect to the pin status.
LED status
Device Status
permanently off
device off
Net search / Not
registered / turning
off
Registered
full
service
a call is active
fast blinking
(period 1s, Ton 0,5s)
slow blinking
(period 3s, Ton 0,3s)
permanently on
2.12.13
Automatic answer (Voice, Data or FAX)
After a specified number of rings, the module will automatically answer with a beep. The user can set
the number of rings by means of the command ATS0=<n>.
2.12.14
•
•
•
•
•
•
•
•
•
Supplementary services (SS)
Call Barring,
Call Forwarding,
Calling Line Identification Presentation (CLIP),
Calling Line Identification Restriction (CLIR),
Call Waiting, other party call Waiting Indication,
Call Hold, other party Hold / Retrieved Indication,
Closed User Group supplementary service (CUG),
Advice of Charge,
Unstructured SS Mobile Originated (MO)
2.12.15
Acoustic signaling
The acoustic signalling of the GM862 on the selected acoustic device are the following:
•
•
•
•
•
Call waiting;
Ringing tone;
SMS received tone;
Busy tone;
Power on/off tone;
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page 22 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
•
•
•
•
•
•
Off Hook dial tone;
Congestion tone;
Connected tone;
Call dropped;
No service tone;
Alarm tone.
2.12.16
DTMF tones
DTMF tones are managed by specific AT commands. These tones are generated with AT commands
only during voice calls. The minimum duration of a DTMF tone can be set on 10 ms but it should be
considered that this value can vary with the limitations on network.
Group high
Group low
1209 Hz
1336 Hz
1477 Hz
697 Hz
770 Hz
852 Hz
941 Hz
1
4
7
*
2
5
8
0
3
6
9
#
NOTE: The GSM system architecture defines that the audio signal of the DTMF tones is inserted by
the network switches on commands sent by the Mobile Station (MS). Thus, the default duration
parameters may vary from network to network. In case that the devices to be controlled by DTMF are
sensitive related to the duration of the tones and timing of the sequences, dedicated investigations on
the parameter settings have to be made.
2.12.17
Buzzer Output
The General Purpose I/O pin GPIO7 can be configured to output the BUZZER output signal, with only
an external Mosfet/transistor and a diode a Buzzer can be directly driven. The ringing tone and the
other signalling tones can be redirected to this Buzzer output with a specific AT command.
2.12.18
RF Transmission Monitor
As alternate function of the GPIO5, the GM862-GPS, QUAD-PY and QUAD provide the RF
transmission monitor. When the alternate function is activated, the pin of GPIO5 changes to HIGH
every time the module transmits an RF signal and remains HIGH for the duration of the transmission
sequence, i.e. it does not change with every GSM signal burst.
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page 23 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.13 EMC
Compliant to EN301-489-1 and EN301-489-7 and all applicable GSM Specifications. Compliant to
Directive 1999/05/CE.
2.14 Logic level specifications
Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following
table shows the logic level specifications used in the Telit GM862 interface circuits:
Absolute Maximum Ratings -Not Functional
Parameter
Min
Max
Input level on any -0.3V
digital pin when on
Input voltage on -0.3V
analog pins when on
Voltage on Buffered -0.3V
pins
+3.75V
+3.0 V
25V
Operating Range - Interface levels (2.8V CMOS)
Level
Min
Max
Input high level
2.1V
3.3V
Input low level
Output high level
Output low level
0V
2.2V
0V
0.5V
3.0V
0.35V
For 2,0V signals:
Operating Range - Interface levels (2.0V CMOS)
Level
Min
Max
Input high level
1.6V
3.3V
Input low level
Output high level
Output low level
0V
1,65V
0V
0.4V
2.2V
0.35V
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page 24 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.14.1
Reset signal
Signal
RESET
Function
Phone reset
I/O
I
Pin
23 (connector SO301)
RESET is used to reset the GM862 modules. Whenever this signal is pulled low, the GM862 is reset.
When the device is reset it stops any operation. After the release of the reset GM862-QUAD and
GM862-QUAD-PY are unconditionally rebooted, while GM862-GPS is unconditionally shut down,
without doing any detach operation from the network where it is registered to. This behaviour is not a
proper shut down because any GSM device is requested to issue a detach request on turn off. For this
reason the Reset signal must not be used to normally shutting down the device, but only as an
emergency exit in the rare case the device remains stuck waiting for some network response.
The RESET is internally controlled on start-up to achieve always a proper power-on reset sequence,
so there's no need to control this pin on start-up. It may only be used to reset a device already on that
is not responding to any command.
NOTE: do not use this signal to power off the GM862. Use the ON/OFF signal (Pin 17 of SO301) to
perform this function or the AT#SHDN command.
Reset Signal Operating levels:
Signal
RESET Input high
RESET Input low
Min
2.2V*
0V
Max
3.3V
0.2V
* this signal is internally pulled up so the pin can be left floating if not used.
If unused, this signal may be left unconnected. If used, then it must always be connected with an
open collector transistor, to permit to the internal circuitry the power on reset and under voltage
lockout functions.
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page 25 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.15 Audio levels specifications
The audio path of the Telit GM862 module is organized into two main paths:
•
•
internal path (called also MT)
external path (called also HF)
These two paths are meant respectively for handset and headset/hands free use. The Telit GM862
Family modules has a built in echo canceller and a noise suppressor, tuned separately for the two audio
paths; for the internal path the echo canceller parameters are suited to cancel the echo generated by
a handset, while for the external audio path they are suited for a hands free use.
For more information on the audio refer to the Hardware User Guide. The following table reports all
the audio level specifications.
Microphone characteristics
Internal audio mic. input
-45dBVrms/Pa
7cm
External audio mic. input
-45dBVrms/Pa
50cm
Line coupling
AC ( 100nF cond.)
AC ( 100nF cond.)
Line type
Differential input resistance
Line nominal sensitivity
Max input voltage
Microphone nominal sensitivity
- Analog Gain suggested
Echo canceller type
Balanced
Balanced
25kΩ (typical)
50mVrms ± 2dB
360mVrms
-45dBVrms/Pa (±3dB) /+24dB
25kΩ (typical)
3mVrms ± 2dB
22mVrms
-45dBVrms/Pa (±3dB) /+10dB
Handset
Car kit hands free
Internal audio ear. output
≥ 16Ω ± 5% @ 1kHz
100mW
External audio ear. output
≥ 16Ω ± 5% @ 1kHz
100mW
DC
Bridged
DC
Bridged
15Ω
150-8000 Hz @ -3dB
1700mVrms
30mW/16Ω
-2dB
10
15Ω
150-8000 Hz @ -3dB
850mVrms
7,5mW/16Ω
-2dB
10
Nominal sensitivity
Distance
Line input characteristics
Speaker characteristics
Speaker impedance
Rated Input Power
Line out driver
Line coupling
Line type
Minimum load impedance
Signal bandwidth
Maximum output
Maximum power output
Volume level steps (SW)
Number of volume steps (SW)
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page 26 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.16 Camera compatibility (EASY CAMERA)
The GM862-QUAD, QUAD-PY and GPS provide a direct support for the camera whose characteristics are
the following:
Model:
Technology:
Max
picture
size:
Output format:
Sensitivity:
TRANSCHIP TC5747
CMOS COLOR camera
VGA 640x480 pixels
JPEG
4V/lux-sec (including gain)
The camera will be directly managed by the hardware/software with some interface circuitry, providing
a custom AT command interface to operate with it.
The camera interface requires the pins and GPIOs:
Signal
CAM_SDA
CAM_SCL
CAM_CLK
CAM_ON
CAM_RST
pin
47
46
25
32
34
When the camera is activated, then these pins are not accessible as GPIO.
The AT commands of the module allows to take a snapshot and successively
download it through the serial line in various formats.
2.17 ADC Converter (GM862-GPS only)
The on board ADCs are 11-bit converter. They are able to read a voltage level in the range of 0÷2
volts applied on the ADC pin input, and convert it into 11 bit word.
Voltage range
AD conversion
Resolution
Sampling rate
Min
0
11
1
Max
2
11
1
1 (idle)
60 (on traffic)
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Units
Volt
bits
mV
secs
page 27 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.18 Interface connectors on GM862 modules
The Telit GM862 Family modules has the following interfaces:
•
•
•
•
GSM antenna connector (see 2.7.3,)
Board To Board Interface connector
SIM Card Reader
GPS antenna connector (GM862-GPS only)
The Telit GM862 Family modules board to board connector is a CSTP 50 pin vertical SMD Molex 52991–
0508 (male).
Its pin-out (down view) is:
GPS Antenna
connector position
(on the vertical side)
(GM862 GPS only)
49
50
Connector Position
and PIN-Out order
1
2
GSM Antenna
connector position
(on the vertical side)
SIM CARD reader
position
(on the vertical side)
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page 28 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
Molex 52991-0508 (male) GM862 Connector LAY-OUT
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 29 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
• Molex 52991-0508 (male) GM862 Connector PIN-OUT
In the table below, the pin assignment of the all GM862-GPS, QUAD-PY and QUAD are compared
against the previous models of GM862.
The cells marked with yellow colour, highlight the differences typically because more features are
available on the newest models, except for the camera (see specific paragraph and application note).
GM862-QUAD, -QUAD-PY
GM862-PCS / -PYTHON
GM862-GSM, -GPRS
PIN I/O SIGNAL
FUNCTION
I/O SIGNAL
power I
FUNCTION
VBATT
Main
supply
2
-
GND
Ground
3
I
VBATT
Main
supply
4
-
GND
Ground
5
I
VBATT
Main
supply
6
-
GND
Ground
7
I
VBATT
Main
supply
8
-
GND
Ground
9
AO EAR_HF+
Handsfree
ear AO EAR_HF+
signal
output,
phase+
Handsfree ear AO EAR_HF+
signal output,
phase+
Handsfree ear signal
output, phase+
10
AO EAR_MT-
Handset
AO EAR_MTearphone signal
output, phase-
Handset
signal
phase-
11
AO EAR_HF
Handsfree
ear AO EAR_HF
signal
output,
phase-
Handset
AO EAR_MTearphone
signal output,
phaseHandsfree ear AO EAR_HFsignal output,
phase-
12
AO EAR_MT+
Handset
AO EAR_MT+
earphone signal
output, phase+
AO EAR_MT+
Handset
signal
phase+
13
AI
MIC_HF-
Handsfree
AI
microphone
signal
input,
phase- , nominal
level 500mVpp
MIC_HF-
AI
MIC_HF-
Handsfree
microphone signal
input,
phase,
nominal
level
500mVpp
14
AI
MIC_MT+
Handset
AI
microphone
signal
input,
phase+ nominal
level 1030mVpp
MIC_MT+
AI
MIC_MT+
Handset microphone
signal input, phase+
nominal
level
1030mVpp
15
AI
MIC_HF+
Handsfree
AI
microphone
signal
input;
phase+, nominal
level 500mVpp
MIC_HF+
Handset
earphone
signal output,
phase+
Handsfree
microphone
signal
input,
phase,
nominal level
500mVpp
Handset
microphone
signal
input,
phase+
nominal level
1030mVpp
Handsfree
microphone
signal
input;
phase+,
nominal level
500mVpp
AI
MIC_HF+
Handsfree
microphone signal
input;
phase+,
nominal
level
500mVpp
power I
power I
AI
power I
GND
Ground
VBATT
Main
supply
GND
Ground
VBATT
Main
supply
GND
Ground
VBATT
Main
supply
CHARGE
Charger Input
FUNCTION
I
-
Main
supply
I/O SIGNAL
1
power I
VBATT
GM862-GPS
power I
power I
I
power I
AI
VBATT
Main power supply
GND
Ground
VBATT
Main power supply
GND
Ground
VBATT
Main power supply
ADC_IN1
Analog
/
Digital
Converter Input
VBATT
Main power supply
CHARGE
Charger Input
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
earphone
output,
Handsfree ear signal
output, phaseearphone
output,
page 30 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
GM862-QUAD, -QUAD-PY
GM862-PCS / -PYTHON
GM862-GSM, -GPRS
PIN I/O SIGNAL
FUNCTION
I/O SIGNAL
FUNCTION
GM862-GPS
I/O SIGNAL
AI
MIC_MT-
Handset
AI
microphone
signal
input;
phase-, nominal
level 1030mVpp
MIC_MT-
I
ON/OFF*
Input command I
for
switched
power ON or OFF
(toggle
command)
ON/OFF*
18
I
AXE
Handsfree
switching
AXE
19
I/O SIMIO
External
SIM I/O SIMIO
signal – Data I/O
20
I
C103/TXD
Serial data input I
(TXD) from DTE
(RX of Module)
C103 /
TXD
21
O
PWRCTL
Power sense for O
external devices
(pull
up
is
10Kohm)
PWRCTL
CAM_SYNC
I
SIMVCC
External
SIM I
signal – Power
SIMVCC
23
I
RESET*
Reset input
I
RESET*
Reset input
24
I
SIMRST
External
SIM I
signal – Reset
SIMRST
25
-
-
RESERVED
MON1_CAM
Camera
Interface
26
I
SIMCLK
External
SIM I
signal – Clock
SIMCLK
External SIM I
signal – Clock
27
I/O CCIN
External
SIM I/O CCIN
signal – Presence
(active low)
28
O
General purpose O
output Buffered
16
17
22
1
2
GPO2
I
O
GPO2 /
JDR
Handset
AI
microphone
signal
input;
phase-,
nominal level
1030mVpp
Input
I
command for
switched
power ON or
OFF
(toggle
command)
Handsfree
I
switching
External SIM
signal – Data
I/O
Serial
data
input
(TXD)
from DTE (RX
of Module)
/ Module Status
ON indication
(Signal output
for
power
on/off control
of
external
devices)
/
Camera
Interface. Pull
up is 820 ohm
External SIM
signal – Power
FUNCTION
MIC_MT-
Handset microphone
signal input; phase-,
nominal
level
1030mVpp
ON/OFF*
Input command for
switched power ON
or OFF
(toggle command)
AXE
Handsfree switching
I/O SIMIO
External SIM signal
– Data I/O
I
C103 /
TXD
Serial data input
(TXD) from DTE (RX
of Module)
O
PWRCTL
Module Status ON
indication
(Signal
output for power
on/off control of
external devices) .
Pull up is 1k
I
SIMVCC
External SIM signal
– Power
I
RESET*
Reset input
External SIM I
signal – Reset
SIMRST
External SIM signal
– Reset
CAM_CLK
Camera
(CLK)
SIMCLK
External SIM signal
– Clock
O
External SIM I/O SIMIN
signal
–
Presence
(active low)
General
O
GPO2 /
purpose output
JDR
(open
collector)
/
Camera
Interface / JDR
Interface
External SIM signal
– Presence (active
low)
General
purpose
output
(open
collector) / JDR
1 This pin is pulled up internally to VBATT and has a transistor base input.
2
On this line a maximum of 10nF bypass capacitor is allowed
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 31 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
GM862-QUAD, -QUAD-PY
GM862-PCS / -PYTHON
GM862-GSM, -GPRS
PIN I/O SIGNAL
FUNCTION
I/O SIGNAL
29
O
C106/CTS
Output for Clear O
to send signal
(CTS) to DTE
C106 /
CTS
30
O
C125/RING
Output for Ring O
indicator
signal
(RI) to DTE
C125 /
RING
31
I
GPI1
General purpose I
input Buffered
GPI1
32
-
-
RESERVED
33
O
C107/DSR
Output for Data O
set ready signal
(DSR) to DTE
34
-
-
RESERVED
35
O
EMMI TX
TX
Data
for O
debug monitor (1)
EMMI TX
36
O
C109/DCD
Output for Data O
carrier
detect
signal (DCD) to
DTE
C109 /
DCD
37
O
C104/RXD
Serial data output O
to DTE (TX of
Module)
C104 /
RXD
38
-
-
RESERVED
39
O
STAT LED
Status
led
40
-
-
RESERVED
41
I
EMMI RX
RX
Data
for I
debug monitor (1)
42
-
-
RESERVED
43
O
C108/DTR
Input for Data O
terminal
ready
signal (DTR) from
DTE
I/O GPIO8 /
PD[0]
C107 /
DSR
I/O GPIO9 /
PD[1]
I/O GPIO10 /
PD[2]
indicator O
STAT LED
I/O GPIO11 /
PD[3]
EMMI RX
I/O GPIO12 /
PD[4]
C108 /
DTR
FUNCTION
GM862-GPS
I/O SIGNAL
FUNCTION
Output
for O
Clear to send
signal (CTS) to
DTE
Output for Ring O
indicator signal
(RI) to DTE
C106 /
CTS
Output for Clear to
send signal (CTS) to
DTE
C125 /
RING
Output
for
Ring
indicator signal (RI)
to DTE
General
purpose input
Buffered
General
Purpose I/O /
Camera
Interface
Output for Data
set
ready
signal (DSR) to
DTE
General
Purpose I/O /
Camera
Interface
TX Data for
debug monitor
(1)
Output for Data
carrier detect
signal (DCD) to
DTE
GPI1
General
purpose
input Buffered
I
I/O GPIO8
CAM_ON
O
C107 /
DSR
I/O GPIO9
CAM_RST
/ General Purpose I/O
/ Camera Interface
Output for Data set
ready signal (DSR)
to DTE
/ General Purpose I/O
/ Camera Interface
O
TX_GPS
TX Data for NMEA
(GPS)
O
C109 /
DCD
Output for Data
carrier detect signal
(DCD) to DTE
Serial
data O
output to DTE
(TX of Module)
C104 /
RXD
Serial data output to
DTE (TX of Module)
General
I/O GPIO10
Purpose I/O /
Camera
Interface
Status
O
STAT_LED
indicator led
General Purpose I/O
General
Purpose I/O /
Camera
Interface
RX Data for
debug monitor
(1)
General
Purpose I/O /
Camera
Interface
Input for Data
terminal ready
signal
(DTR)
from DTE
I/O GPIO11
General Purpose I/O
/ Trace / Debug
Python
I
RX Data for NMEA
(GPS)
RX_GPS
Status indicator led
I/O GPIO12
General Purpose I/O
/ trace / Python
debug
O
Input
for
Data
terminal ready signal
(DTR) from DTE
C108 /
DTR
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page 32 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
GM862-QUAD, -QUAD-PY
GM862-PCS / -PYTHON
GM862-GSM, -GPRS
PIN I/O SIGNAL
GM862-GPS
FUNCTION
I/O SIGNAL
FUNCTION
I/O SIGNAL
FUNCTION
44
-
-
RESERVED
I/O GPIO13 /
PD[5]
I/O GPIO13
General Purpose I/O
45
O
C105/RTS
Input for Request O
to send signal
(RTS) from DTE
O
Input for Request to
send signal (RTS)
from DTE
46
I/O GPIO3
General Purpose I/O GPIO3 /
I/O
PD[6]
47
I/O GPIO4
General Purpose I/O GPIO4
I/O
IICSDA
48
I/O GPIO5
General Purpose I/O GPIO5
/
I/O
CAM_DRDY /
RFTXMON
49
I/O GPIO6
General Purpose I/O GPIO6
/
I/O
ALARM / PD[7]
50
I/O GPIO7
General Purpose I/O GPIO7
/
I/O
BUZZER
/
CAM_PWR_ON
General
Purpose I/O /
Camera
Interface
Input
for
Request
to
send
signal
(RTS)
from
DTE
General
Purpose I/O /
Camera
Interface
General
Purpose I/O /
Camera
Interface
General
Purpose I/O /
Camera
Interface / RF
Transmission
Monitor
General
Purpose I/O /
ALARM output
/
Camera
Interface
General
Purpose I/O /
BUZZER
output Pin /
Camera
Interface
C105 /
RTS
/
C105 /
RTS
I/O GPIO3
CAM_SCL
/ General Purpose I/O
/ Camera Interface
I/O GPIO4
CAM_SDA
/ General Purpose I/O
/ Camera Interface
I/O GPIO5 /
RFTXMON
General Purpose I/O
/ RF Transmission
Monitor
I/O GPIO6
ALARM
/ General Purpose I/O
/ ALARM output
I/O GPIO7
BUZZER
/ General Purpose I/O
/ BUZZER output
Pin
Note: If not used, almost all pins should be left disconnected. The only exceptions are the following
pins:
pin
1,3,5,7
2,4,6,8
17
20
23
37
45
3
signal
VBATT
GND
ON/OFF*
TXD
RESET*
RXD
RTS 3
RTS should be connected to the GND ( on the module side) if flow control is not used
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page 33 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.19 Mounting the GM862 modules on your Board
In order to electrically connect your board to the Telit GM862 Family modules, use a CSTP 2x25 pin
vertical SMD SCH–SCH Molex 53748 - 0504 (female, low profile) as a counterpart to the CSTP 50
pin vertical SMD Molex 52991–0508 (male) of your Telit GM862 Family modules.
When mounting the Telit GM862 Family modules on your board, take care of soldering the GM862
shielding reeds on a ground plane or signal.
NOTE: be very careful when connecting the Telit GM862 module RF connector. The Telit GM862
module RF connector can be damaged if not connected with the proper antenna RF connector. The
minimum number of insertion cycles is recommended.
2.19.1
Antenna Coaxial cable fixing
The following constraints must be respected in the Telit GM862 Family modules antenna cable
connection:
•
The fixing point of the coaxial cable must not be placed too close to the antenna connector of the
GM862 module, leaving at least 30mm of flexible cable between the fixed point and the plug end.
•
The fixing point must be at the same height of the GM862 module antenna connector, eventually
using a wedge between the PCB and the cable if it is directly fixed to the PCB.
•
The flexible cable must never be bent with a radius lower than 25mm (RG174 cable).
•
The cable must be a RG174 type or more flexible ones.
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page 34 of 96
GM862 Product Description
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The following pictures explain these constraints:
- Angle connector fixing example -
- Angle connector fixing example 2 NOTE: in the examples the cable is always bent, this is not a constrain. If the installation does not
require it, then the cable can be kept straight, ensuring that the fixing is without sliding.
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page 35 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
2.19.2
•
•
•
•
Precautions
The plug should be inserted in the connector only after the installation of the Telit GM862
Family modules in the board. This is to prevent accidental breaking of the antenna
connection during the transport.
The coaxial cable must be fixed at least in one point, without sliding possibilities.
The plug insertion/removal must be done axially with the female connector of the GM862,
keeping lateral strains to a minimum.
The insertion/crimping pull out force must be less than 15N.
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page 36 of 96
GM862 Product Description
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3 Evaluation Kit
In order to assist you in the development of your Telit GM862 Family modules based application, Telit can
supply an Evaluation Kit that interfaces the Telit GM862 Family modules directly with appropriate power
supply, SIM card housing, RS 232 serial port level translator and USB, direct UART connection,
Handset, Headset and Hands-free (car kit) audio, antenna.
The EVK provides a fully functional solution for a complete data/phone application.
The standard serial RS232 9 pin connector placed on the Evaluation Kit allows the connection of the
EVK system with a PC or other DTE.
The development of the applications utilizing the Telit GM862 Family modules must present a proper
design of all the interfaces towards and from the module (e.g. power supply, audio paths, level
translators), otherwise a decrease in the performances will be introduced or, in the worst case, a
wrong design can even lead to an operating failure of the module.
In order to assist the hardware designer in his project phase, the EVK board presents a series of
different solutions, which will cover the most common design requirements on the market, and which
can be easily integrated in the OEM design as building blocks or can be taken as starting points to
develop a specific one.
GM862-Evaluation Kit
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page 37 of 96
GM862 Product Description
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3.1 Evaluation Kit description
For a detailed description of the Telit GM862 Evaluation Kit refer to the documentation provided with the
Telit GM862 Hardware User Guide.
3.1.1 Power Supply
In the Board there are three different power supply inputs, that embrace a wide range of applications,
from the automotive +12V / +24V nominal input to the stand alone battery powered device.
The power sources nominal input voltages are:
•
•
•
+5 ÷ +40V input
+3.8V direct input for stabilized laboratory power supply
direct Li-Ion Battery power input (also with charging function of the module, when a suitable
charger is connected to the charger input
Each one of these power sources can supply both the Telit GM862 Family modules and the whole
circuitry embodied in the Evaluation Kit.
Only one of these power sources can be used at a time and it is selectable with two jumpers.
3.1.2 Serial interface
The communications between your application and the Telit GM862 Family modules must be done
through a serial interface which can be a standard CMOS UART or a RS232 port.
All levels of the RS232 port are conform to RS232 and V.24 standard and a PC serial port can be
directly connected to this connector.
Both these interfaces are supported.
3.1.3 Audio
The Evaluation Kit board provides two software/hardware selectable audio paths, the internal and the
external one. All the handset, headset and hands free-car kit functions are supported.
Furthermore for each audio path two solution are presented: single ended and balanced.
3.1.4 GPIO and Leds
All the General Purpose Input Output ports of the Telit GM862 Family modules are supported in a
dedicated connector and several leds are added as a debug aid.
3.1.4.1 Telit GM862 Family modules interface connector
The PL401 transceiver interface connector placed on the Telit GM862 Evaluation Kit is a female CSTP
2x25 pin vertical SMD SCH–SCH Molex 53748 - 0504 (low profile). See pin out on the SO301
connector on Telit GM862 Family modules.
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page 38 of 96
GM862 Product Description
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Molex 53748-0504 (female, low profile) Connector LAY-OUT
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page 39 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
4 Service and firmware update
The Telit GM862 modules firmware can be updated through the same serial interface, which is used
normally for the AT commands. Since the software group is continuously working, in order to improve
the overall performances and introduce new features on the product, we suggest, in order to keep
updated the module’s firmware, to foresee an external access to that interface with level converters to
RS232, which allows connecting a Windows-based PC. It shall be possible to start the update
procedure at POWER OFF condition of the module and then switch it ON to continue.
During the application development or evaluation phase of the Telit GM862 module, the RS232 interface
with the level converters or the USB port implemented on the Telit Evaluation Kit EVK2 can be used
to connect to a Windows-based PC on which the specific program for updating the Software (TFI) can
be run.
4.1 Step-by-Step upgrade procedure
The firmware update can be done with a specific software tool provided by Telit that runs on Windows
based PCs.
First the program will erase the content of flash memory, then the program will write on the flash
memory. To update the firmware of the module, we suggest the following procedure:
1. Collect information about the Hardware and implemented version of Software by the
command
AT+CGMR<enter>,
which
returns
the
Software
version
information;
- AT+CGMM<enter>, which returns the Model Identification.
2. Switch OFF the module.
3. Run the file TFI_xxxx.exe. The following window should be displayed, Select the language
preferred by pressing the correspondent button.
4. The End User License Agreement will appear. Please, read it and accept the terms if you are
going to proceed.
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GM862 Product Description
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5. Press OK to the initial message.
NOTE: In connection with the GM862 modules, charged battery has to be understood that the
power supply must not be disconnected during the firmware update.
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GM862 Product Description
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6. Select the right COM port and speed. Note that to go faster than 115200 you need a special
hardware on the PC. Then Press the Download button and within 5 seconds power-on the
GM862.
Wait for the end of programming green message OK
The Telit GM862 module is now programmed with the new firmware.
NOTE: the above pictures show how the application dialogs appear for the GM862-PCS product. The
GM862-GPS, PY and QUAD TFI application will look similar.
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page 42 of 96
GM862 Product Description
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5 Software Features
5.1 Enhanced Easy GPRS Extension
5.1.1 Overview
The Easy GPRS feature allows the models Telit GM862-QUAD,QUAD-PY and GPS user to contact a device
in internet and establish with it a raw data flow over the GPRS and Internet networks.
This feature can be seen as a way to obtain a "virtual" serial connection between the Application
Software on the Internet machine involved and the controller of the Telit GM862 module, regardless
of all the software stacks underlying.
An example of the protocol stack involved in the devices is reported:
Controller
Device
Telit
GM862
Remote
Device
(Internet)
networks
Local
Application
Remote
Application
<<<---------------------------------- Virtual Serial link ---------------------------------->>>
Firewall
TCP/UDP
EASY
GPRS
EASY
GPRS
Serial
Line
Driver
Data
on
Board
V.24
V.24
TCP/UDP
IP
IP
IP
IP
L2
L2
L1
L1
network interworking
This particular implementation allows to the devices interfacing to the Telit GM862 module the use of the
GPRS and Internet packet service without the need to have an internal TCP/IP stack since this
function is embedded inside the module. The new Enhanced version of the Easy GPRS overcomes
some of the known limitations of the previous implementation and implements some new features
such as:
• Keep the GPRS context active even after the closing of a socket, allowing the application to keep
the same IP address;
• Also Mobile terminated (incoming) connections can be made, now it is possible to receive
incoming TCP connection requests;
• A new internal firewall has been implemented in order to guarantee a certain level of security on
internet applications.
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GM862 Product Description
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5.1.2 Easy GPRS definition
The Easy GPRS feature provides a way to replace the need of an Internet TCP/IP stack at the
terminal equipment side. The steps that will be required to obtain a virtual serial connection (that is
actually a socket) to the Internet peer are:
•
•
•
•
•
•
configuring the GPRS Access
configuring the embedded TCP/IP stack behaviour
defining the Internet Peer to be contacted
request the GPRS and socket connections to be opened (host is connected)
exchange raw data
close the socket and GPRS context
All these steps are achieved through AT commands.
As for common modem interface, two logical status are involved: command mode and data traffic
mode.
•
•
In Command Mode (CM), some AT commands are provided to configure the Data Module
Internet stack and to start up the data traffic.
In data traffic mode (Socket Mode, SKTM), the client can send/receive a raw data stream
which will be encapsulated in the previously configured TCP / IP packets which will be sent to
the other side of the network and vice versa. Control plane of ongoing socket connection is
deployed internally to the module.
5.1.2.1 Configuring the GPRS access
The GPRS access configuration is done by setting the following:
•
•
the GPRS context number 1 parameters (see +CGDCONT command)
the Authentication parameters: User Name and Password (see commands #USERID, #PASSW)
5.1.2.2 Configuring the embedded TCP/IP stack
The TCP/IP stack behaviour must be configured by setting:
•
•
•
the packet default size (see command #PKTSZ)
the data sending timeout (see command #DSTO)
the socket inactivity timeout (see command #SKTTO)
5.1.2.3 Defining the Internet peer to be contacted
As last setting definition, the host to be contacted and on which port/protocol must be set the socket
definition (see command #SKTSET).
This command permits also to specify the host name instead of its IP address, if a host name is given
to the set command, then the module stores it as a host nick name. It is care of the module user to
guarantee that the host nick name provided corresponds to an existing internet peer.
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GM862 Product Description
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If an host nick name has been given then, while opening the connection in response to the
AT#SKTOP command, the module will autonomously activate a GPRS connection and query its DNS
to obtain the IP address relative to the host nick name provided. This process of context activation and
DNS query may require a bit more time and requires that the GPRS network coverage is good enough
to permit data transfers.
5.1.2.4 Open the connection with the internet host
With the AT#SKTOP all the process required to connect with the internet host starts:
•
•
•
•
•
GM862 activates the first context
GM862 proceeds to the authentication with the parameters specified
Eventually does the DNS query to resolve the IP address of the host name internet peer
GM862 establishes a TCP/UDP (depending on the parameter request) connection with the given
internet host
Once the connection is up the module reports the code: CONNECT
From this moment the data incoming in the serial port is packet and sent to the Internet host, while the
data received from the host is serialised and flushed to the Terminal Equipment.
5.1.2.5 Close the Socket and deactivate the context
The connection can be closed because of:
•
•
•
•
remote host TCP connection close
socket inactivity timeout
Terminal Equipment by issuing the escape sequence "+++"
Network deactivation
NOTE: if in the raw data to be sent there's an escape sequence, then the TE must work it out and
sent it in a different fashion to guarantee that the connection is not closed.
The pause time is defined in the parameter S12.
On the reception of an escape sequence the GM862 closes the connection, deactivates the GPRS
context returning to command mode and issuing the NO CARRIER code.
5.1.3 Enhanced Easy GPRS Outgoing connection
The New Enhanced Easy GPRS feature provides a way to place outgoing TCP/UDP connections and
keep the same IP address after a connection, leaving the GPRS context active.
The steps that will be required open a socket and close it without closing the GRPS context are:
•
•
•
•
•
•
configuring the GPRS Access
configuring the embedded TCP/IP stack behaviour
defining the Internet Peer to be contacted
request the GPRS context to be activated
request the socket connection to be opened
exchange data
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GM862 Product Description
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•
close the TCP connection while keeping the GPRS active
All these steps are achieved through AT commands. As for common modem interface, two logical
status are involved: command mode and data traffic mode.
•
•
In Command Mode (CM), some AT commands are provided to configure the Data Module
Internet stack and to start up the data traffic.
In data traffic mode (Socket Mode, SKTM), the client can send/receive a raw data stream which
will be encapsulated in the previously configured TCP / IP packets which will be sent to the other
side of the network and vice versa. Control plane of ongoing socket connection is deployed
internally to the module.
5.1.3.1 Configuring the GPRS access
The GPRS access configuration is done by setting:
•
•
the GPRS context number 1 parameters (see +CGDCONT command)
the Authentication parameters: User Name and Password (see commands #USERID, #PASSW)
5.1.3.2 Configuring the embedded TCP/IP stack
The TCP/IP stack behaviour must be configured by setting:
•
•
•
the packet default size (see command #PKTSZ)
the data sending timeout (see command #DSTO)
the socket inactivity timeout (see command #SKTTO)
5.1.3.3 Defining the Internet peer to be contacted
As last setting definition, the host to be contacted and on which port/protocol must be set the socket
definition (see command #SKTSET).
This command permits also to specify the host name instead of its IP address, if a host name is given
to the set command, then the module stores it as a host nick name. It is care of the module user to
guarantee that the host nick name provided corresponds to an existing internet peer.
If an host nick name has been given then, while opening the connection in response to the
AT#SKTOP command, the module will autonomously activate a GPRS connection and query its DNS
to obtain the IP address relative to the host nick name provided. This process of context activation and
DNS query may require a bit more time and requires that the GPRS network coverage is good enough
to permit data transfers.
Note that this setting command is not needed if the new #SKTD command is used.
5.1.3.4 Request the GPRS context to be activated
With the new command #GPRS you can activate or deactivate a GPRS context INDEPENDENTLY
from the TCP socket opening:
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page 46 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
AT#GPRS=1 activates the context,
AT#GPRS=0 deactivates the context
Therefore with the AT#GPRS=1 command the module:
•
•
GM862 activates the context previously defined with AT+CGDCONT
GM862 proceeds to the authentication with the parameters specified
Note that activating a context implies getting an IP address from the network and this will be
maintained throughout the session.
The response code to the AT#GPRS=1 command reports the IP address obtained from the network,
allowing the user to report it to his server or application.
Deactivating the context implies freeing the network resources previously allocated to the device.
5.1.3.5 Open the connection with the internet host
With the new command #SKTD (socket Dial) the TCP/UDP request to connect with the internet host
starts:
•
•
•
Eventually does the DNS query to resolve the IP address of the host name internet peer
GM862 establishes a TCP/UDP (depending on the parameter request) connection with the given
internet host
Once the connection is up the module reports the code: CONNECT
Note that the peer specifications of this socket Dial are within the command and not the one stored
with #SKTSET command.
From this moment the data incoming in the serial port is packet and sent to the Internet host, while the
data received from the host is serialised and flushed to the Terminal Equipment.
NOTE: this command differently from the AT#SKTOP DOES NOT automate all the process of
activating the GPRS, if no GPRS is active the command reports ERROR; therefore before issuing this
command the GPRS shall be activated with AT#GPRS=1 command.
In the same manner, when disconnecting the #SKTD command does not close the GPRS context,
leaving it active for next connections until an AT#GPRS=0 command is issued or the network requests
a context closing.
5.1.3.6 Close the Socket without deactivating the context
The connection can be closed because of:
•
•
•
•
remote host TCP connection close
socket inactivity timeout
Terminal Equipment by issuing the escape sequence "+++"
Network deactivation
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GM862 Product Description
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NOTE: if in the raw data to be sent there's an escape sequence, then the TE must work it out and
sent it in a different fashion to guarantee that the connection is not closed.
The pause time is defined in the parameter S12.
On the reception of an escape sequence if the socket was opened with the AT#SKTD command, the
GM862 closes the connection, does not deactivate the GPRS context and returns to command mode
issuing the NO CARRIER code.
5.1.4 Enhanced Easy GPRS Incoming Connection
The New Enhanced Easy GPRS feature provides a way to accept incoming TCP/UDP connections
and keep the same IP address after a connection, leaving the GPRS context active.
The steps that will be required to open a socket in listen, waiting for connection requests from remote
hosts and accept these request connections only from a selected set of hosts, then close it without
closing the GRPS context are:
•
•
•
•
•
•
•
•
configuring the GPRS Access
configuring the embedded TCP/IP stack behaviour (see par. 5.1.3.2)
defining the Internet Peer that can contact this device (firewall settings) (see par. 5.1.4.1)
request the GPRS context to be activated (see par. 5.1.3.4)
request the socket connection to be opened in listen (see par. 5.1.4.2)
receive connection requests (see par. 5.1.4.3)
exchange data
close the TCP connection while keeping the GPRS active (see par. 5.1.3.6)
All these steps are achieved through AT commands.
As for common modem interface, two logical status are involved: command mode and data traffic
mode.
•
•
In Command Mode (CM), some AT commands are provided to configure the Data Module
Internet stack and to start up the data traffic.
In data traffic mode (Socket Mode, SKTM), the client can send/receive a raw data stream which
will be encapsulated in the previously configured TCP / IP packets which will be sent to the other
side of the network and vice versa. Control plane of ongoing socket connection is deployed
internally to the module.
5.1.4.1 Defining the Internet Peer that can contact this device (firewall settings)
The GM862 has an internal Firewall that controls the behaviour of the incoming connections to the
module.
The firewall applies for INCOMING (listening) connections, OUTGOING connections will be always
done regardless of the firewall settings.
Firewall General policy is DROP, therefore all packets that are not included into an ACCEPT chain
rule will be silently discarded.
When a packet incomes from the IP address <incoming IP>, the firewall chain rules will be scanned
for matching with the following criteria:
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GM862 Product Description
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<incoming IP> & <net mask> = <ip_address> ?
if the result is yes, then the packet is accepted and the rule scan is finished, otherwise the next chain
is taken into account until the end of the rules when the packet is silently dropped if no matching was
found.
For example, let assume we want to accept connections only from our devices which are on the IP
addresses ranging from 197.158.1.1 to 197.158.255.255
We need to add the following chain to the firewall:
AT#FRWL=1,"197.158.1.1","255.255.0.0"
5.1.4.2 Request the socket connection to be opened in listen
With the new command #SKTL (socket Listen) the TCP request to start listening for connection
requests is executed. The GM862 opens a listening socket on the port specified, waiting for incoming
TCP connections (depending on the parameter request) with the internet hosts
The parameters that shall be specified are the local port where packets shall be received, the type of
socket and the closing behaviour.
5.1.4.3 Receiving connection requests
Once the connection request is received, the module reports an indication of connection with an
unsolicited code
+CONN FROM: <remote address>
•
then connection is accepted and once it is up the module reports the code:
CONNECT
From this moment the data incoming in the serial port is packet and sent to the Internet host, while the
data received from the host is serialised and flushed to the Terminal Equipment.
Note that the connections request are FIRST screened in the firewall, then if they are accepted they
pass to the listening socket; therefore only hosts that are in the ACCEPT chain rules of the firewall can
induce a connection request, the other host requests will be silently discarded without any indication to
the remote host (for security reasons).
Once the connection is received and closed, the socket is not anymore in listen. If the application
needs again to be in listen, then it shall send again the socket listen #SKTL command.
NOTE: this command differently from the AT#SKTOP DOES NOT automate all the process of
activating the GPRS, if no GPRS is active the command reports ERROR; therefore before issuing this
command the GPRS shall be activated with AT#GPRS=1 command.
In the same manner, when disconnecting the #SKTL command does not close the GPRS context,
leaving it active for next connections until an AT#GPRS=0 command is issued or the network requests
a context closing.
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GM862 Product Description
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5.1.5 FTP Client
On top of the embedded TCP/IP stack, an FTP client is available. Such FTP is a versatile protocol
suite, designed to be powerful, compact and simple to use for file transfer over the TCP/IP and
therefore over the GPRS network.
As far as the AT commands list is concerned, the customer shall refer to the AT Commands chapter.
5.1.6 Known limitations
The implementation of the EASY GPRS feature has the following known limitations:
•
•
•
Only one socket can be opened at a time, no multiple socket connections can be made;
Only one connection request can be accepted at a time, subsequent requests will be silently
discarded.
Only the first GPRS context is associated with this feature;
It is taken for granted that external processor will be able to handle at least a limited v.24
implementation: RTS, CTS and, highly recommended, DCD lines; this because software flow control is
not applicable to the feature;
Due to the particularity of this feature, the flow control of both the directions uplink and downlink is
interlocked.
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page 50 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.2 Jammed Detect & Report Extension
5.2.1 Overview
The Jammed Detect & Report feature allows a Telit GM862-QUAD,QUAD-PY and GPS modules to detect
the presence of a disturbing device such as a Communication Jammer and give indication to the user
and/or send a report of that to the network.
This feature can be very important in alarm, security and safety applications that rely on the module
for the communications. In these applications, the presence of a Jammer device can compromise the
whole system reliability and functionality and therefore shall be recognized and reported either to the
local system for countermeasure actions or to the network providing remote actions.
An example scenario could be an intrusion detection system that uses the module for sending the
alarm indication for example with an SMS to the system owner, and a thief incomes using a Jammer
to prevent any communication between the GSM module and the network.
In such a case, the module detects the Jammer presence even before the break in and can trigger an
alarm siren, other communication devices (PSTN modem) or directly report this condition to the
network that can provide further security services for example sending SMS to the owner or police.
Obviously this last service depends also from network infrastructure support and it may not be
supported by some networks.
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page 51 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.3 Easy Script Extension - Python interpreter
5.3.1 Overview
NOTE: This feature is available only on models GM862-QUAD-PY and GM862-GPS.
The Easy Script Extension is a feature that allows driving the modem "internally", writing the
controlling application directly in a nice high level language: Python.
The Easy Script Extension is aimed at low complexity applications where the application was usually
done by a small microcontroller that managed some I/O pins and the GM862-QUAD-PY and GM862GPS through the AT command interface.
A schematic of such a configuration can be:
EXTERNAL
CONTROLLER
FLASH ROM
GM862-QUAD-PY/GM862-GPS
RAM
PHYSICAL AT SERIAL
PORT
GSM-GPRS
Protocol Stack
FLASH
ROM
memory
AT commands
GPRS MODEM
ENGINE
RAM for
GSM-GPRS
modem
Protocol Stack
HARDWARE RESOURCES
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page 52 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
In order to eliminate this external controller, and further simplify the programming of the sequence
of operations, inside the GM862-QUAD-PY / GM862-GPS it is included:
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Python script interpreter engine v. 1.5.2+
around 3MB of Non Volatile Memory room for the user scripts and data
1.5 MB RAM reserved for Python engine usage
A schematic of this approach is:
FLASH ROM
RAM
PYTHON
INTERPRETER ENGINE
Available User
NVM FLASH
Memory
(3Mbyte)
GSM-GPRS
Protocol Stack
FLASH
ROM
memory
MDM module
VIRTUAL INTERNAL AT
SERIAL PORT
AT commands
GPRS MODEM
ENGINE
Available RAM
for Python
Interpreter
(1.5Mbyte)
RAM for
GSM-GPRS
modem
Protocol Stack
HARDWARE RESOURCES
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page 53 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.3.2 Python 1.5.2+ Copyright Notice
The Python code implemented into the Telit module is copyrighted by Stichting Mathematisch
Centrum, this is the license:
Copyright © 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, The Netherlands.
All Rights Reserved
Copyright (c) 1995-2001 Corporation for National Research Initiatives; All Rights Reserved.
Copyright (c) 2001, 2002, 2003, 2004 Python Software Foundation; All Rights Reserved.
Copyright (c) 2001-2006 Python Software Foundation; All Rights Reserved.
All Rights Reserved are retained in Python.
Permission to use, copy, modify, and distribute this software and its documentation for any purpose
and without fee is hereby granted, provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear in supporting documentation, and
that the names of Stichting Mathematisch Centrum or CWI or Corporation for National Research
Initiatives or CNRI not be used in advertising or publicity pertaining to distribution of the software
without specific, written prior permission.
While CWI is the initial source for this software, a modified version is made available by the
Corporation for National Research Initiatives (CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM OR CNRI BE
LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 54 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.3.3 Python implementation description
Python scripts are text files stored in NVM inside the Telit GM862-QUAD-PY and GM862-GPS.
There's a file system inside the module that allows to write and read files with different names on one
single level (no subdirectories are supported).
Attention: it is possible to run only one Python script at the time.
The Python script is executed in a task inside the Telit module at the lowest priority, making sure this
does not interfere with GSM/GPRS normal operations. This allows serial ports, protocol stack etc. to
run independently from the Python script.
The Python script interacts with the Telit module functionality through four build-in interfaces.
Hardware Resources
antenna
GPRS Modem Engine
Virtual internal AT serial port
MDM library
MOD library
Python Engine with
UPGRADABLE
software script
GPIO
GPIO library
Print
command
Serial port 1 (ASC1*)
ex TRACE
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SER library
Serial port 0 (ASC0*)
ex PROG
The MDM interface is the most important one. It allows Python script to send AT commands,
receive responses and unsolicited indications, send data to the network and receive data from
the network during connections. It is quite the same as the usual serial port interface in the
Telit module. The difference is that this interface is not a real serial port but just an internal
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page 55 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
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software bridge between Python and mobile internal AT command handling engine. All AT
commands working in the Telit module are working in this software interface as well. Some of
them have no meaning on this interface, such as those regarding serial port settings. The
usual concept of flow control keeps its meaning over this interface, but it's managed internally.
The SER interface allows Python script to read from and write to the real, physical serial port
where usually the AT command interface resides, for example to read NMEA information from
a GPS device. When Python is running this serial port is free to be used by Python script
because it is not used as AT command interface since the AT parser is mapped into the
internal virtual serial port. No flow control is available from Python on this port.
The GPIO interface allows Python script to handle general purpose input output faster than
through AT commands, skipping the command parser and going directly to control the pins.
The MOD interface is a collection of useful functions.
For the debug, the print command is directly forwarded on the EMMI TX pin (second serial port) at
baud rate115200bps 8N1.
5.3.4 Python core supported features
The Python core version is 1.5.2+ (string methods added to 1.5.2).
You can use all Python statements and almost all Python built-in types and functions.
.
Built-in types and functions not
supported
complex
float
long
docstring
Available modules
(all others are not supported)
marshal
imp
_main_
_builtin_
sys
md5
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page 56 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.3.5 Python Build-in Custom Modules
Several build in custom modules have been included in the python core, specifically aimed at the
hardware environment of the module.
The build in modules included are:
MDM
SER
GPIO
MOD
interface between Python and mobile internal AT command handling
interface between Python and mobile internal serial port ASC0 direct handling
interface between Python and mobile internal general purpose input output
direct handling
interface between Python and mobile miscellaneous functions
IIC
custom software Inter IC bus that can be mapped on creation over almost any
GPIO pin available
SPI
custom software Serial Protocol Interface bus that can be mapped on creation
over almost any GPIO pin available
NOTE: More details about the Python modules are available in the Python Reference Guide.
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page 57 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.4 CMUX
NOTE: Available only for the products with the following part numbers:
Model
GM862-QUAD-PY
GM862-QUAD
GM862-GPS
P/N
3990250658
3990250659
3990250657
CMUX ( Converter-Multiplexer) is a multiplexing protocol implemented in the Telit module that can be
used to send any data, SMS, fax, TCP data.
5.4.1.1 Product architecture
The Multiplexer mode enables one serial interface to transmit data to four different customer
applications. This is achieved by providing four virtual channels using a Multiplexer (Mux).
This is especially advantageous when a fax/data/GPRS call is ongoing. Using the Multiplexer features,
e.g. controlling the module or using the SMS service can be done via the additional channels without
disturbing the data flow; access to the second UART is not necessary.
Furthermore, several accesses to the module can be created with the Multiplexer. This is of great
advantage when several independent electronic devices or interfaces are used.
To access the three virtual interfaces, both the GSM engine and the customer application must
contain Mux components, which communicate over the multiplexer protocol.
In Multiplexer mode, AT commands and data are encapsulated into packets. Each packet has channel
identification and may vary in length.
5.4.1.2 Implementation feature and limitation
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7.10 CMUX Basic Option used
CMUX implementation support four full DLCI (Serial Port)
CMUX can operate only at Fixed rate, if AT+CMUX is sent with IPR=0 an Error is returned,
with a maximum rate of 115200
Every instance has its own user profile storage in NVM
Independent setting of unsolicited message.
In case of GPS product one serial port can be dedicated to NMEA output.
Every Instance has its own independent flow control
NOTE: More details about the Multiplexer mode are available in the Cmux Product Specification
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 58 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
5.5 SAP:SIM Access Profile
NOTE: Available only for the products with the following part numbers:
Model
GM862-QUAD-PY
GM862-QUAD
GM862-GPS
P/N
3990250658
3990250659
3990250657
5.5.1 Product architecture
The SAP feature allow the module to use the SIM of a remote SIM Server. This feature is
implemented using special AT Command on a Virtual circuit of the CMUX interface.
5.5.2 Implementation feature
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SAP is based on 7.10 CMUX Basic Option used
Only SAP Client features
Logic HW flow control is recommended on the Virtual instance selected for the SAP command.
5.5.3 Remote SIM Message Command Description
The module sends request commands to the client application through a binary message that is
crowned in the CMUX message. The client application shall extract the message and send it to the
SAP server, through the appropriate protocols (e.g. by RFCOMM, that is the Bluetooth serial port
emulation entity).
The client application shall extract all the messages sent by SAP server and put them in the CMUX
message, to sent to the module.
The module satisfies the following feature requirements:
• Connection management
• Transfer APDU
• Transfer ATR
• Power SIM on
• Report Status
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
• Error Handling
Every feature needs some procedures support:
Feature
Connection Management
Transfer APDU
Transfer ATR
Power SIM on
Report Status
Error Handling
Procedure
Connect
Report Status
Transfer ATR
Disconnection Initiated by the Client
Disconnection Initiated by the Server
Transfer APDU
Transfer ATR
Power SIM on
Transfer ATR
Report Status
Error Response
Report Status, Disconnection Initiated by the Server and Error Response are independent messages
sent by server. The other procedures consist of couples of messages, started by client.
NOTE: More details about the SAP are available in the SAP Product Specification
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
6
AT Commands
The GM862 module can be driven via the serial interface using the standard AT commands 4. The
GM862 module are compliant with:
1. Hayes standard AT command set, in order to maintain the compatibility with existing SW
programs.
2. ETSI GSM 07.07 specific AT command and GPRS specific commands.
3. ETSI GSM 07.05 specific AT commands for SMS (Short Message Service) and CBS (Cell
Broadcast Service)
4. FAX Class 1 compatible commands
Moreover the GM862 supports also Telit proprietary AT commands for special purposes.
The following table lists all supported AT commands and related brief description.
For a detailed description of GM862 modules AT Commands refer to document AT Commands
Reference Guide, code 80000ST10025a.
For a detailed description of GM862GPS modules, refer to the AT Command Description document,
code 80268ST10015a.
Hayes Compliant AT Commands
Backward Compatibility
#SELINT
Select Interface Style
Repeating a Command Line
A/
Last command automatic repetition
Hayes AT Commands - Generic Modem Control
&F
Z
+FCLASS
&Y
&P
&W
&Z
&N
+GMI
+GMM
+GMR
+GCAP
+GSN
Reset base section factory profile
configuration
Soft reset
Select active service class
Designate a default reset basic
profile
Designate a default reset full profile
Store current configuration
Store telephone number in the
internal phonebook
Display internal phonebook stored
numbers
Request manufacturer identification
Request model identification
Request revision identification
Request capabilities list
Request serial number
GM862 module Command availability
QUAD
QUAD-PY
GPS
3990250655
3990250656
3990250657
QUAD-PY
3990250658
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The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT command combined
with other parameters can be set up in the communications package or typed in manually as a command line instruction.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 61 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
&V
Display current configuration &
profile
&V0
Display current configuration &
profile
&V1
Display S registers values
&V2
Display last connection statistics
&V3
Display S registers values
\V
Single line connect message
%L
Report line signal level
%Q
Report line quality
+GCI
Select the country of installation
L
Monitor speaker loudness
M
Monitor speaker mode
Hayes AT Commands - DTE-Modem Interface
Control
E
Command echo
Q
Quiet resut codes
V
Response Format
X
Extended result codes
I
Request identifier and software
checksum
&C
Data carrier detect (DCD) control
&D
Data terminal ready (DTR) control
&K
Flow control
\Q
Standard Flow Control
&S
Data set ready (DSR) control
\R
Ring (RI) control
+IPR
Fixed DTE interface rate
+IFC
DTE - DTA flow control
+ILRR
DTE - modem rate reporting
+ICF
DTE - modem character format
Hayes AT Commands - Call Control
D
Dial
T
Set tone dial
P
Set pulse dial
A
Answer
H
Disconnect
O
Return to On Line Mode
&G
Guard tone
&Q
Sync/async mode
Hayes AT Commands - Modulation Control
+MS
%E
Modulation control
Enable/disable line quality monitor
and auto retrain or fallback /
fallforward
Hayes AT Commands - Compression Control
+DS
Set data compression
+DR
Data compression reporting
Hayes AT Commands - Break Control
\B
\K
\N
Transmit break to remote
Break handling
Operating mode
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
Hayes AT Commands - S Parameters
S0
S1
S2
S3
S4
S5
S7
Number of rings to auto answer
Ring counter
Escape character
Carriage return character
Line feed character
Backspace character
Wait time for carrier, silence or dial
tone
S12
Escape prompt delay
S25
Delay to DTR off
S30
Disconnect inactivity timer
S38
Delay before forced hang up
ETSI GSM 07.07 - General
+CGMI
+CGMM
+CGMR
+CGSN
Request manufacturer identification
Request model identification
Request revision identification
Request product serial number
identification
+CSCS
Select TE character set
+CIMI
Request
international
mobile
subscriber identity (IMSI)
+CMUX
Multiplexing Mode
ETSI GSM 07.07 - Call Control
+CHUP
Hang Up Call
+CBST
Select bearer service type
+CRLP
Radio link protocol
+CR
Service reporting control
+CEER
Extended error report
+CRC
Cellular result codes
+CSNS
Single numbering scheme
+CVHU
Voice Hang Up Control
ETSI GSM 07.07 - Network Service Handling
+CNUM
+COPN
+CREG
+COPS
+CLCK
@CLCK
+CPWD
+CLIP
+CLIR
+CCFC
+CCWA
+CHLD
+CUSD
+CAOC
+CLCC
+CSSN
Subscriber number
Read operator names
Network registration report
Operator selection
Facility lock/ unlock
Facility lock/ unlock (improved)
Change facility password
Calling line identification presentation
Calling line identification restriction
Call
forwarding
number
and
conditions
Call waiting
Call holding services
Unstructured supplementary service
data
Advice of charge
List current calls
SS Notification
QUAD
3990250655
QUAD-PY
3990250656
GPS
3990250657
QUAD-PY
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Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 63 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
+CCUG
Closed User Group supplementary
service control
ETSI GSM 07.07 - Mobile Equipment Control
+CPAS
+CFUN
Phone activity status
Set phone functionality (Power
Saving Management)
+CPIN
Enter PIN
+CSQ
Signal quality
+CIND
Indicator Control
+CMER
Mobile Equipment Event Reporting
+CPBS
Select phonebook memory storage
+CPBR
Read phonebook entries
+CPBF
Find phonebook entries
+CPBW
Write phonebook entry
+CCLK
Clock Management
+CALA
Alarm Management
+CRSM
Restricted SIM Access
+CALM
Alert sound mode
+CRSL
Ringer sound level
+CLVL
Loudspeaker volume level
+CMUT
Microphone mute control
+CACM
Accumulated call meter
+CAMM
Accumulated call meter maximum
+CPUC
Price per unit and currency table
+CCID
Read ICCID (Integrated Circuit Card
Id.)
+CLAC
Available AT Commands
ETSI GSM 07.07 - Mobile Equipment Errors
+CMEE
Report mobile equipment error
ETSI GSM 07.07 - Voice Control (TIA IS-101)
+VTS
DTMF tones transmission
+VTD
Tone Duration
ETSI GSM 07.07 - Commands For GPRS
+CGACT
+CGATT
+CGDATA
+CGDCONT
+CGPADDR
PDP context activate or deactivate
GPRS attach or detach
Enter data state
Define PDP context
Show PDP address
+CGCLASS
+CGREG
+CGQMIN
GPRS Mobile Station Class
GPRS network registration status
Quality of service profile (minimum
acceptable)
+CGQREQ
Quality of service profile (requested)
ETSI GSM 07.07 - Commands For Battery Charger
+CBC
Battery Charge
ETSI GSM 07.05 - General Configuration
+CSMS
Select message service
+CPMS
Preferred message storage
+CMGF
Message format
ETSI GSM 07.05 - Message configuration
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
+CSMP
+CSDH
+CSAS
+CRES
+CSCB
Set parameters in text mode
Show parameters in text mode
Save setting text mode
Restore text mode settings
Select Cell Broadcast Message
types
+CSCA
Service center address
ETSI GSM 07.05 - Message Receiving and Reading
+CNMI
+CMGL
New
message
indications
Terminal Equipment
List messages
@CMGL
+CMGR
List Message
Read message
to
@CMGR
Read Message
ETSI GSM 07.05 - Message Sending and Writing
+CMGS
Send message
+CMSS
Send message from storage
+CMGW
Write message to memory
+CMGD
Delete message
FAX AT Commands – General Configuration
+FMI
Report manufacturer ID
+FMM
Report model ID
+FMR
Report revision ID
FAX AT Commands - Transmission/Reception
control
+FTS
Stop Transmission and pause
+FRS
Wait for receive silence
+FTM
Transmit data modulation
+FRM
Receive data modulation
+FTH
Transmit data with HDLC framing
+FRH
Receive data with HDLC framing
FAX AT Commands - Serial Port Control
+FLO
+FPR
+FDD
Select flow control specified by type
Select serial port rate
Double
escape
character
replacement control
Custom AT Commands – General Configuration
#CGMI
#CGMM
#CGMR
#CGSN
#CIMI
#CCID
#CAP
#SRS
#SRP
#STM
#PCT
Request manufacturer identification
Request model identification
Request revision identification
Request product serial number
identification
Request
international
mobile
subscriber identity (IMSI)
Read ICCID (Integrated Circuit Card
Id.)
Change Audio Path
Select ringer sound
Select Ringer Path
Signaling Tones Mode
Display PIN Counter
3990250655
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GM862 Product Description
#SHDN
#WAKE
#QTEMP
#SGPO
#GGPI
#GPIO
#E2SMSRI
#ADC
#CBC
#AUTOATT
#MSCLASS
#MONI
#SERVINFO
#COPSMODE
#QSS
#DIALMODE
#ACAL
#ECAM
#SMOV
#CODEC
#SHFEC
#HFMICG
#HSMICG
#SHFSD
#/
#BND
#NITZ
#SKIPESC
#AUTOBND
#E2ESC
#GAUTH
#RTCSTAT
Custom AT
Commands
#FTPTO
#FTPOPEN
#FTPCLOSE
#FTPPUT
#FTPPUTPH
#FTPGET
#FTPTYPE
#FTPMSG
#TFPDELE
#FTPPWD
#FTPCWD
#FTPLIST
Software Shut Down
Wake from Alarm mode
Query Temperature overflow
Set General Purpose Output
Read General Purpose Input
General Purpose Input/Output pin
control
SMS Ring Indicator
Read Analog/Digital Converter input
Battery And Charger Status
Enables / Disable GPRS Auto Attach
Multislot Class Control
Monitor Cells
Serving Call Information
+COPS Mode
Query SIM Status
ATD Dialing Mode
Set Automatic Call
Extended Call Monitoring
SMS Overflow
Audio Codec
Set Handsfree echo canceller
Handsfree Microphone Gain
Handset Microphone Gain
Set Handsfree side tone
Repeat last command
Select Band
Network Timezone
Skip escape sequence
Automatic Band Selection
Escape Sequence Guard Time
PPP-GPRS
Connection
Authentication
RTC Status
Commands – FTP CLIENT AT
FTP Time-Out
FTP Open command
FTP Close command
FTP Put command
FTP Put Photo
FTP Get command
FTP Type command
FTP read message command
FTP Delete command
FTP
print
working
directory
command
FTP change working directory
command
FTP List command
Custom AT Commands – Enhanced Easy GPRS®
Extension
#USERID
Authentication User ID control
#PASSW
Authentication Password control
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page 66 of 96
GM862 Product Description
#PKTSZ
#DSTO
#SKTTO
#SKTSET
#SKTOP
#QDNS
#SKTCT
#SKTSAV
#SKTRST
#GPRS
#SKTD
#SKTL
@SKTL
Packet Size control
Data Sending TimeOut control
Socket inactivity timeout control
Socket definition control
Socket Open command
Query DNS
Socket TCP Connection Timeout
Socket Parameters Save Command
Socket Parameters Reset Command
GPRS context activation control
Socket Dial
Socket Listen
Socket Listen (improved)
#E2SLRI
#FRWL
Socket Listen Ring Indicator
Firewall setup
Custom AT Commands – Easy Camera®
Management
#CAMON
Camera ON
#CAMOFF
Camera OFF
#TPHOTO
Camera Take Photo
#RPHOTO
Camera Read Photo
#OBJL
Object List
#OBJR
Object Read
#CAMQUA
Camera Select Quality of Photo
#CMODE
Camera Select Operating MODE
#SELCAM
Camera Model selection
#CAMEN
Camera ON/OFF
#CAMRES
Camera resolution
#CAMCOL
Camera colour mode selection
#CAMZOOM
Camera zoom setting
#CAMTXT
Camera Time/Date overprint
Custom AT Commands – E-mail Management
#ESMTP
#EADDR
#EUSER
#EPASSW
#SEMAIL
#EMAILACT
#EMAILD
#ESAV
#ERST
#EMAILMSG
Email SMTP server
Email sender address
Email authentication USER NAME
Email authentication PASSWORD
Email Sending With GPRS Context
Activation
E-mail context activation control
E-mail socket dial
Email Parameters Save Command
Email Parameters Reset Command
SMTP Read Message
Custom AT Commands – Easy Scan® Extension
#CSURV
#CSURVC
#CSURVU
#CSURVB
#CSURVUC
Network Survey of the complete
900/1800/1900 Network
Network Survey in computer friendly
format
Network Survey of user defined
900/1800/1900 channels
BCCH Network Survey
Network Survey in computer friendly
format
80272ST10019a Rev. 4 – 04/08/2006
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page 67 of 96
GM862 Product Description
#CSURVF
Network Survey Format
<CR><LF> Removing On
#CSURVNLF
Scan® Commands Family
#CSURVEXT
Extended Network Survey
Jammed Detect & Report AT commands
#JDR
Easy
Jammed Detect & Report
Custom AT Commands - Easy Script® Extension 5
Python Interpreter
#WSCRIPT
Write script command
#ESCRIPT
Select Active script command
#RSCRIPT
Read script command
#LSCRIPT
List script names command
#DSCRIPT
Delete script command
#REBOOT
Reboot command
#CMUXSCR
CMUX Script Enable
GPS commands
$GPSP
$GPSRST
$GPSD
$GPSSW
$GPSAT
$GPSAV
$GPSAI
$GPSAP
$GPSNMUN
$GPSACP
$GPSSAV
$GPSRST
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GPS Controller Power Management
GPS Reset
GPS Device Type Set
GPS Software Version
GPS Antenna Type Definition
GPS Antenna Supply Voltage
Readout
GPS Antenna Current Readout
GPS Antenna Protection
Unsolicited NMEA Data Configuration
Get Acquired Position
Save GPS parameters configuration
Restore to Default GPS Parameters
Custom AT Commands – SAP (SIM Access Profile)
#RSEN
#RSM:
#RSM
#RSS
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Remote SIM Enable
Remote SIM Message (Unsolicited)
Remote SIM Message Command
Remote SIM Status Command
Python is a registered trademark of the Python Software Foundation.
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page 68 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7 Conformity Assessments
The Telit GM862 modules are assessed to be conform to the R&TTE Directive as stand-alone
products, so If the module is installed in conformance with Telit Communications installation
instructions require no further evaluation under Article 3.2 of the R&TTE Directive and do not require
further involvement of a R&TTE Directive Notified Body for the final product. In all other cases, or if the
manufacturer of the final product is in doubt then the equipment integrating the radio module must be
assessed
against
Article
3.2
of
the
R&TTE
Directive.
In all cases assessment of the final product must be made against the Essential requirements of the
R&TTE Directive Articles 3.1(a) and (b), safety and EMC respectively, and any relevant Article 3.3
requirements. The Telit GM862 modules are conform with the following European Union Directives:
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R&TTE Directive 1999/5/EC (Radio Equipment & Telecommunications Terminal Equipments)
Low Voltage Directive 73/23/EEC and product safety
Directive 89/336/EEC for conformity for EMC
In order to satisfy the essential requisite of the R&TTE 99/5/EC directive, the GM862PCS module is
compliant with the following standards:
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GSM (Radio Spectrum). Standard: EN 301 511 and 3GPP 51.010-1
EMC (Electromagnetic Compatibility). Standards: EN 301 489-1 and EN 301 489-7
LVD (Low Voltage Directive) Standards: EN 60 950
In this document and the Hardware User Guide, Software User Guide all the information you may
need for developing a product meeting the R&TTE Directive is included.
Furthermore the Telit GM862-QUAD, GM862-QUAD-PY and GM862-GPS modules is FCC Approved as module
to be installed in other devices. If the final product after integration is intended for portable use, a new
application and FCC is required.
The Telit GM862-QUAD, GM862-QUAD-PY and GM862-GPS modules are conform with the following US
Directives:
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Use of RF Spectrum. Standards: FCC 47 Part 24 (GSM 1900)
EMC (Electromagnetic Compatibility). Standards: FCC47 Part 15
To meet the FCC's RF exposure rules and regulations:
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The system antenna(s) used for this transmitter must be installed to provide a separation
distance of at least 20 cm from all the persons and must not be co-located or operating in
conjunction with any other antenna or transmitter.
The system antenna(s) used for this module must not exceed 3 dBi for mobile and fixed or mobile
operating configurations.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 69 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
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Users and installers must be provided with antenna installation instructions and transmitter
operating conditions for satisfying RF exposure compliance.
Manufacturers of mobile, fixed or portable devices incorporating this module are advised to clarify
any regulatory questions and to have their complete product tested and approved for FCC
compliance.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 70 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.1 GM862-QUAD(P/N:3990250655): Conformity Assessment
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
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GM862 Product Description
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.2 GM862-QUAD-PY(P/N:3990250656): Conformity
Assessment
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GM862 Product Description
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GM862 Product Description
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GM862 Product Description
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.3 GM862-QUAD : RoHS certificate
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.4 GM862-QUAD-PY : RoHS certificate
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page 80 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.5 GE862-GPS : RoHS certificate
Under approval.
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 81 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.6 GM862-QUAD FCC Equipment Authorization
Under approval.
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page 82 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.7 GM862-QUAD-PY: Conformity Assessment
Under approval.
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page 83 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.8 GM862-QUAD-PY FCC Equipment Authorization
Under approval.
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.9
GM862-GPS: Conformity Assessment
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
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GM862 Product Description
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GM862 Product Description
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GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.10 GM862-GPS FCC Equipment Authorization
Under approval.
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page 89 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
8 SAFETY RECOMMENDATIONS
READ CAREFULLY
Be sure the use of this product is allowed in the country and in the environment required. The use of
this product may be dangerous and has to be avoided in the following areas:
•
Where it can interfere with other electronic devices in environments such as hospitals, airports,
aircrafts, etc
Where there is risk of explosion such as gasoline stations, oil refineries, etc
•
It is responsibility of the user to enforce the country regulation and the specific environment regulation.
Do not disassemble the product; any mark of tampering will compromise the warranty validity.
We recommend following the instructions of the hardware user guides for a correct wiring of the
product. The product has to be supplied with a stabilized voltage source and the wiring has to be
conforming to the security and fire prevention regulations.
The product has to be handled with care, avoiding any contact with the pins because electrostatic
discharges may damage the product itself. The same cautions have to be taken for the SIM, checking
carefully the instruction for its use. Do not insert or remove the SIM when the product is in power
saving mode.
The system integrator is responsible of the functioning of the final product; therefore, care has to be
taken to the external components of the module, as well as of any project or installation issue,
because the risk of disturbing the GSM network or external devices or having impact on the security.
Should there be any doubt, please refer to the technical documentation and the regulations in force.
Every module has to be equipped with a proper antenna with specific characteristics. The antenna has
to be installed with care in order to avoid any interference with other electronic devices and has to
guarantee a minimum distance from the people (20 cm). In case of this requirement cannot be
satisfied, the system integrator has to assess the final product against the SAR regulation.
Electronic equipment to be introduced in the market has to be conforming to the related Directives of
the European Community. All the relevant information is available on the European Community’s
website, especially:
•
The Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on
radio
equipment
and
telecommunications
terminal
equipment
…:
http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm
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page 90 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
•
The Low Voltage Directive (LVD) 73/23/EEC and The Council Directive 89/336/EEC of 3 May
1989 on ... electromagnetic compatibility (EMC Directive) are available at:
http://europa.eu.int/comm/enterprise/electr_equipment/index_en.htm
•
The DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of
27 January 2003 on waste electrical and electronic equipment (WEEE) and the DIRECTIVE
2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003
on the restriction of the use of certain hazardous substances in electrical and electronic
equipment
(“RoHS”)
are
available
at:
http://europa.eu.int/scadplus/leg/en/lvb/l21210.htm
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 91 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
9 GM862 Family Technical Support
Telit’s technical support to GM862 wireless modem customers consists in:
• Technical documentation: available for download on the Website www.telit.com >Products >Modules
> selected model.
• Engineering support: accessible via E-Mail service with 48 hr replies assured under normal
conditions.
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page 92 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
10 Acronyms
ACM
ASCII
AT
BGA
CB
CBS
CCM
CLIP
CLIR
CMOS
CR
CSD
CTS
DAI
DCD
DCE
DRX
DSR
DTA
DTE
DTMF
DTR
EMC
ETSI
FTA
FTP
GGA
GLL
GPS
GPRS
GSA
GSM
GSV
HF
IMEI
IMSI
IRA
ITU
IWF
Accumulated Call Meter
American Standard Code for Information Interchange
Attention commands
Ball Grid Array (of solder balls on surface mount devices)
Cell Broadcast
Cell Broadcasting Service
Call Control Meter
Calling Line Identification Presentation
Calling Line Identification Restriction
Complementary Metal-Oxide Semiconductor
Carriage Return
Circuit Switched Data
Clear To Send
Digital Audio Interface
Data Carrier Detected
Data Communications Equipment
Data Receive
Data Set Ready
Data Terminal Adaptor
Data Terminal Equipment
Dual Tone Multi Frequency
Data Terminal Ready
Electromagnetic Compatibility
European Telecommunications Equipment Institute
Full Type Approval (ETSI)
File Transfer Protocol
Global Positioning System Fix Data
Geographic Posotion – Latitude/Longitude
Global Positioning System, based on reception of signals from orbiting satellites
General Radio Packet Service
GPS receiver operating mode, SVs used for navigation, and DOP values.
Global System for Mobile communication
Number of SVs in view, PRN numbers, elevation, azimuth & SNR values.
Hands Free
International Mobile Equipment Identity
International Mobile Subscriber Identity
International Reference Alphabet
International Telecommunications Union
Inter-Working Function
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page 93 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
LCD
LED
LF
ME
MMI
MO
MS
MT
NMEA
OEM
PB
PDU
PH
PIN
PLMN
PUCT
PUK
RACH
RLP
RMC
RMS
RoHS
RTS
RI
SCA
SIM
SMD
SMS
SMSC
SS
TIA
TTFF
UDUB
USSD
VTG
Liquid Crystal Display
Light Emitting Diode
Linefeed
Mobile Equipment
Man Machine Interface
Mobile Originated
Mobile Station
Mobile Terminated
National Marine Electronics Association
Other Equipment Manufacturer
Phone Book
Protocol Data Unit
Packet Handler
Personal Identity Number
Public Land Mobile Network
Price per Unit Currency Table
PIN Unblocking Code
Random Access Channel
Radio Link Protocol
Recommended Minimum Specific GPS/TRANSIT Data
Root Mean Square
Reduction of Hazardous Substances
Ready To Send
Ring Indicator
Service Center Address
Subscriber Identity Module
Surface Mounted Device
Short Message Service
Short Message Service Center
Supplementary Service
Telecommunications Industry Association
Time To First Fix
User Determined User Busy
Unstructured Supplementary Service Data
Actual track made good and speed over ground
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved
page 94 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
11 Document Change Log
Revision
ISSUE#0
Date
10/04/05
ISSUE#1
27/10/05
ISSUE#2
ISSUE#3
24/01/06
04/05/06
ISSUE#4
04/08/06
Changes
initial release.
Paragraphs reviewed:
1
Overview
2.1
Dimensions (GPS antenna position frozen)
2.3.1
Temperature range
2.6
Reference sensitivity
2.7.1
GSM Antenna
2.8
GPS Module features
2.8.1.1 GPS Sensitivity
2.8.1.2 GPS Consumption
2.12.9 Character management
2.12.12 Indication of network service availability
2.17
ADC Converter (GM862-GPS only)
4
AT Commands (Camera cmds, FTP cmds, GPS cmds,
#NITZ, #SKIPESC, etc)
5.1.5
FTP Client
Added products order codes table on page 2
7.2 GM863-QUAD: RoHS certificate
7.3 GM862-QUAD-PY: RoHS certificate
2.14.1 Reset signal: unconditional reboot page 24
2.7.2 GPS antenna power supply changed
2.12.16 DTMF Tones: changed minimum duration of DTMF tone
2.14
Logical level specification: voltage on buffered pins
2.14.1 Reset signal: unconditional shut down for GM862-GPS
2.15
Audio level specification
2.18
Interface connectors on GM862 modules: Added size for the
Molex male connector (page 30); Added NOTE after pin table (page
33); changed value of the maximum capacitor allowed for SIMVCC
line
3.1.4.1 Telit GM862 Family modules interface connector: Added size
for the Molex female connector (page 40)
5.4
CMUX: new paragraph dedicated to the products with the
following P/N: 3990250657, 3990250658 and 3990250659
5.4
SAP: new paragraph dedicated to the products with the
following P/N: 3990250657, 3990250658 and 3990250659
6
AT Commands: updated AT command list (CMUX, SAP, GPS
and others: see rows in yellow) and added columns for the new
products
7.1
GM862-QUAD(P/N:3990250655): Conformity Assessment
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page 95 of 96
GM862 Product Description
80272ST10019a Rev. 4 – 04/08/2006
7.2
7.9
GM862-QUAD(P/N:3990250656): Conformity Assessment
GM862-GPS: Conformity Assessment
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