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S M C G P
User Manual
R S X X X
L a n d C e l l S M C E m b e d d e d W i r e l e s s M o d e m
G S M G P R S U n i v e r s a l S o c k e t
001-0004-829
Rev01; November 2011
Rev00
Rev01
Released
Updates related to Rev02 hardware changes.
10/2009
11/2011
REVISION HISTORY
TABLE OF CONTENTS
ABBREVIATIONS ................................................................................ 7
PRODUCT OVERVIEW .......................................................................... 8
SECTION 4 DEVELOPMENT/TEST BOARD INTERFACE ............................................. 12
SECTION 5 GETTING STARTED USING THE SMC TEST BOARD ................................ 14
SECTION 6 SIM CARD SPECIFIC INFORMATION .................................................... 20
SECTION 7 CALL SETUP INFORMATION ............................................................... 23
Step-by-step instructions on how to configure and use TCP/IP communications: ..... 29
Maximum number of profiles defined / used: ...................................................... 29
SECTION 8 SMC MODEM MODULE PROFILES ........................................................ 31
SECTION 9 COMMON AT COMMAND REFERENCE GUIDE ........................................ 32
TABLE OF CONTENTS
SECTION 10 AT COMMAND REFERENCE .............................................................. 34
SECTION 12 SERVICE AND SUPPORT ................................................................. 57
I X A – P O W E R S U P P L Y D E S
P E N D I I X B – C R E A T I I N G A D I I A L U P N E T W O R K I N G C O N N E C T I I O N
Create a Dial-Up Networking (DUN) Connection................................................... 66
I X C – W A R R A N T Y S T A T E M E N T
S E C T I O N 1 P R E
F
A C E
Copyright Notice
©2011 CalAmp. All Rights Reserved.
This manual covers the operation of the CalAmp SMC-GPRS Embedded Wireless Modem.
Specifications described are typical only and are subject to normal manufacturing and service tolerances.
CalAmp reserves the right to modify the equipment, its specification or this manual without prior notice, in the interest of improving performance, reliability or servicing. At the time of publication all data is correct for the operation of the equipment at the voltage and/or temperature referred to. Performance data indicates typical values related to the particular product.
No part of this documentation or information supplied may be divulged to any third party without the express written consent of CalAmp.
Products offered may contain software which is proprietary to CalAmp. The offer or supply of these products and services does not include or infer any transfer of ownership.
Modem Use
The SMC-GPRS modem is designed and intended for use in fixed and mobile applications.
―Fixed‖ assumes the device is physically secured at one location and not easily moved to another location. Please keep the cellular antenna of the SMC-GPRS at a safe distance from your head and body while the modem is in use (see below).
Important
Maintain a distance of at least 20 cm (8 inches) between the transmitter‘s antenna and any person while in use. This modem is designed for use in applications that observe the 20 cm separation distance.
Interference Issues
Avoid possible radio frequency (RF) interference by following these guidelines:
The use of cellular telephones or devices in aircraft is illegal. Use in aircraft may endanger operation and disrupt the cellular network. Failure to observe this restriction may result in suspension or denial of cellular services to the offender, legal action or both.
Do not operate in the vicinity of gasoline or diesel-fuel pumps unless use has been approved and authorized.
Do not operate in locations where medical equipment that the device could interfere with may be in use.
Do not operate in fuel depots, chemical plants, or blasting areas unless use has been approved and authorized.
Use care if operating in the vicinity of protected personal medical devices, i.e., hearing aids and pacemakers.
Operation in the presence of other electronic equipment may cause interference if equipment is incorrectly protected. Follow recommendations for installation from equipment manufacturers.
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Mobile Application Safety
Do not change parameters or perform other maintenance of the SMC-GPRS while driving.
Road safety is crucial. Observe National Regulations for cellular telephones and devices in vehicles.
Avoid potential interference with vehicle electronics by correctly installing the
SMC-GPRS. CalAmp recommends installation by a professional.
Related Documents
[1]
Cinterion Wireless Application Developer‘s Guide WM_AN24_DevGuide_v07
[2]
Cinterion Wireless AT Command Set, TC63i TC63i_ATC_V01.100
[3]
Cinterion Power Supply for Wireless Applications WM_AN26_PwrSupply_v04
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S E C T I O N 2 A B B
R
E V I
A
T I O
N
S
Abbreviation Description
RX
TA
TE
TX
GSM
IMEI
LED
ME
MS
OTA
PDP
PPP
PRL
RSSI
APN
CDMA
CSD
CTS
DCD
DCE
DTE
DUN
EDGE
GPRS
GPS
Access Point Name
Code Division Multiple Access
Circuit Switched Data
Clear to Send
Data Carrier Detect
Data Communication Equipment
Data Terminal Equipment
Dial-Up Network
Enhanced Data rates for Global Evolution
General Packet Radio Service
Global Positioning System
Global System for Mobile communication
International Mobile Electronic Identity
Light Emitting Diode
Mobile Equipment
Mobile Station
Over the Air
Packet Data Protocol
Point to Point Protocol
Preferred Roaming List
Receive Signal Strength Indication
Receive
Terminal Adapter
Terminal Equipment
Transmit
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S E C T I O N 3 P R O D U C T O V E R V I E
W
Module Identification
Label Information
The label contains the CalAmp part number, serial number, FCC ID, and the IMEI number.
IMEI:
The International Mobile Equipment Identifier of the cellular module in decimal format.
General Description
The LandCell SMC-GPRS embedded wireless modem from CalAmp is a versatile, cost-effective wireless communications device designed for the industry-standard universal socket. Quadband GSM/GPRS offers compatibility with cellular networks around the world.
The SMC-GPRS embedded modem is ideal for OEM customers looking to add cellular wireless communications to their products. Applications include: monitoring, metering, diagnostics, security, data collection, and other applications requiring wireless connectivity.
Features and Benefits
Industry-standard Universal Socket open interface
GSM/GPRS Quad-Band 850/900/1800/1900 MHz
Supports GPRS Class 12
TCP/IP stack access via AT commands
Circuit Switch Data
Short Message Service (SMS)
Packet Data
MMCX Antenna Connector
Optimized for OEM applications
Catalog Part Number Breakdown
SMC-GPRS-XXX (XXX
= Carrier Identifier)
GEN
= Generic
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SMC Module Description
Top side reference
4
5
3
Fig. 2.1 SMC-GPRS Top Side
SMC-GPRS top side components:
1. Power
: Green LED indicating cell module power on.
2. DCD
: Red LED indicating Data Carrier Detect from cellular network.
3. RF (antenna)
: MMCX socket, primary antenna connection.
4. SIM:
SIM Card Slot (SIM card purchased separately).
5. GSM Cell Module
2
1
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Bottom side reference
3
2
Fig. 2.2 SMC-GPRS Bottom Side
SMC-GPRS bottom side socket pins:
1. VCC/GND pins
2. –Reset/GND pins
3. SERIAL pins
1
Figure 2.3 SMC Pins, Top View
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Pin Descriptions
Pin #
Pin
Name
I/O
Type
Description
24
26, 41, 63
33
-RESET
GND
-RTS
Input
This signal is used to force a reset procedure by providing a low level for at least 10 ms. Data stored in volatile memory will be lost.
This line must be driven by an open drain or open collector. If unused, keep line open.
Ground
Input Request to Send. Signal used for hardware flow control
34
35
36
-RXD Output Received Data. Line used to send received data and modem
-TXD Input
Transmitted Data. Line used to send data and transmit commands from the DTE.
-RI Output
Ring Indicator. Output low (ON) indicates the presence of a ring signal.
37
38
39
40
-DSR Output Data Set Ready. Line used to indicate modem status to the DTE.
-CTS Output
Clear to Send. Line controlled by the modem to indicate whether or not the modem is ready to transmit data.
-DCD Output
Data Carrier Detect. Line asserted by the DTE to indicate connection status.
-DTR Input
Data Terminal Ready. Line asserted by the DTE to indicate that it is ready to transmit or receive data.
61 VCC Power +5 VDC ±0.25 VDC
Digital Input lines: Input High, Min 3.675 V
Input Low, Max 1.4 V
Digital Output Lines: Output High, Min 4.0 V
Output Low, Max 0.4 V
Digital Line Current Drive: 2.0 mA
-RESET Input line: Input Low, Max 0.4 V, internal 22K ohm pull-up to 3.9VDC.
NOTE: VCC is the maximum voltage rating on Serial UART input pins.
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S E C T I O N 4 D E V
E
L O P M E N T / T E S T B O
A
R D I N T E
R
F
A
C
E
Development/Test board
The Development/Test board is required to interface the SCM-GPRS modem to a standard RS232 serial connection. The SMC test board also supplies the SMC-GPRS modem with the required +5VDC supply voltage from an externally supplied 10 to 28 VDC power source, +12VDC typical.
9
1
2
4
3
5
6
7
8
Figure 4.1 SMC modem with DK test board
SMC-GPRS test board components:
1. SMC-GPRS modem
2. MMCX to SMA RF cable:
Provides connection to external antenna.
3. RS-232 Port:
Standard D-Sub, 9 pin, female connector.
4. Power Connector:
Molex 4-pos 3MM receptacle (lower left: GND, lower right: +VDC).
5. Blue LED:
Power Indicator
6. Yellow LED:
DCD Indicator
7. Green LED:
RXD Indicator
8. Red LED:
TXD Indicator
9.
RESET Switch
: Bottom side of DK test board (under far right mounting screw)
Note:
USB connector reserved for future use.
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RS-232 Serial Port Integration Parameters
3
4
5
6
7
8
Table 4.2 provides the serial cable design information for the SMC-GPRS using the DK test board.
Table 4.2 Standard RS-232 DE-9 Pin out
Pin Name Direction Description
1 CD «— Carrier Detect
2 RX «— Receive Data
TX
DTR
GND
DSR
RTS
CTS
—»
—»
«—
—»
«—
Transmit Data
Data Terminal Ready
System Ground
Data Set Ready
Request to Send
Clear to Send
9 RI «— Ring Indicator
Note: Direction is DTE relative DCE
.
Table 4.3 Default RS-232 Communication Parameters
Bits Per Second 115,200
Data Bits 8
Parity
Stop Bits
Flow Control
None
1
Hardware
Accessories
Antenna 3‖ Mag Mount Antenna L2-ANT0003
Antenna Adapter Cable
Power Supply
MMCX to SMA cable
110 VAC input
DC Power Cable
497-7500-003 or
697-7500-003
150-7001-001
150-7500-002
Interface Cable Serial Cable L2-CAB0002
Primary Antenna
The primary antenna connection on the SMC-GPRS is a MMCX connector. Mounting options and cable lengths are user‘s choice and application specific.
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S E C T I O N 5 G E T T I N G S T A R T E D U S I N G T H E S M C T E S T
B
O A R
D
This section describes the use of the SMC test board to set up the SMC modem for internet access using HyperTerminal and a dial-up network connection (DUN). Please refer to
Appendix B
for details on setting up a modem driver for a DUN connection.
Connecting Up the SMC Test Board
Connect the Power cable, RS232 cable, Antenna cable to the SMC test board as shown in Figure 5.1.
Insert an active SIM card into the SMC modem.
Figure 5.1 SMC test board connections
HyperTerminal Settings
Open a HyperTerminal session and configure the properties for the COM port used to connect the
SMC test board.
Set HyperTerminal properties for:
Bits per second:
115200
Data bits:
8
Parity:
None
Stop bits:
1
Flow control:
Hardware
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Verify SMC Modem Connectivity
Power on the SMC test board (+12VDC typical) and observe the HyperTerminal window for
^SYSSTART
, indicating the SMC modem successfully powered on.
Figure 5.2 HyperTerminal screen responses
The
ATI
command prints the cell module product information. If you get an Error or no communication, verify the modem is connected to the proper COM port and powered on. Refer to
Figure 5.2 for all the AT commands listed below.
Confirm your SIM card is properly installed with the
AT^SCID
command. A reply of ^SCID:<20 digit CID number> indicates the modem recognizes the SIM card and displays it‘s ID number.
Confirm the phone number currently in the modem with the
AT+CNUM
command. It should be 11 digits i.e. 18052162288. For some carriers the phone number may not display but will respond with
―OK‖. If the SIM card is not in the unit or not activated properly, the modem will reply with ―ERROR‖.
Verify the modems International Mobile Equipment Identity (IMEI) number with the
AT+CGSN
command. The IMEI is used to identify GSM mobile equipment to the GSM network.
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Confirm that the SIM‘s PIN has been authenticated by the network using the
AT+CPIN?
command.
The reply should read ―+CPIN: READY‖. See Section 6 for SIM related information if ―READY‖ does not display.
Verify good signal strength with the
AT+CSQ
command. A typical reply is +CSQ 25, 99. The first number is signal strength and ranges from 0 to 31 (the higher the number, the stronger the signal).
Define the Packet Data Protocol (PDP) Context
Next, the Access Point Name (APN) must be defined using the PDP Context command
AT+CGDCONT=1,“IP”,<apn>
command. The <apn> is the access point name for a specific cellular provider (for example AT+CGDCONT=1,‖IP‖,internet). The
At+CGDCONT?
command can be issued to verify the PDP Context information.
The PDP context information can be set to non-volatile by issuing the
AT^SCFG=GPRS/Persistentcontexts=1
command. GPRS PDP context will not be reset by an
AT&F command. Refer to Figure 5.3.
Figure 5.3 Set PDP Contexts, APN
Exit HyperTerminal before attempting to connect using a Dial-Up-Networking connection.
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Connect using the Dial-Up-Network Connection
Go to the Network Connections screen and double click on the newly created Dial-Up connection (i.e.
SMC-GPRS).
When the connect window appears, set the username and password as defined for your carrier
(usually blank). Enter the phone number as
*99***1#
and click the
Dial
button.
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The modem will attempt to connect to the provider network. If the configured baud rate for the COM port, the modem, and the DUN do not match, the DUN will not be able to talk to the modem properly and you will get a hardware error message. Otherwise the DUN will contact the cellular network and authenticate the user on the network.
Once connected you should be able to browse the internet thorough the DUN session. To confirm this, disable any other network connections you may have running.
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Right click on the connected Dial-Up connection icon in the task bar and select the Details tab. The status of the connection will be displayed, including the IP address assigned by the carrier network.
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S E C T I O N 6 S I M C A R D S P E C I F I C I
N
F O R
M
A T I
O
N
The SIM card can be used to store a Personal Idetification Number (PIN) to authenticate users on the network.
The AT+CPIN write command can be used to enter one of the passwords listed below. The read command can be used to check whether or not the ME is waiting for a password, or which type of password is required.
This may be for example the SIM PIN1 to register to the GSM network, or the SIM PUK1 to replace a disabled SIM PIN1 with a new one, or the PH-SIM PIN if the client has taken precautions for preventing damage in the event of loss or theft etc. If requested by the ME AT+CPIN may also be used for the SIM PIN2 or SIM PUK2. If no PIN1 request is pending (for example if PIN1 authentication has been done and the same PIN1 is entered again) SMC modem responds "+CME
ERROR: operation not allowed"; no further action is required.
Each time a password is entered with AT+CPIN the module starts reading data from the SIM. The duration of reading varies with the SIM card. This may cause a delay of several seconds before all commands which need access to SIM data are effective.
AT+CPIN=<pin>[, <new pin>]
<pin>: Password (string type), usually SIM PIN1. If the requested password was a Pin Unlock Code
(PUK), such as SIM PUK1 or PH-FSIM PUK or another password, then <pin> must be followed by
<new pin>.
<new pin>: If the requested code was a PUK: specify a new password or restore the former disabled password. See section ―What to do if PIN or password authentication fails?‖ for more information about when you may need to enter the PUK.
Successful PIN authentication only confirms that the entered PIN was recognized and correct. The output of the result code OK does not necessarily imply that the mobile is registered to the desired network. Typical example: PIN was entered and accepted with OK, but the ME fails to register to the network. This may be due to missing network coverage, denied network access with currently used
SIM card, no valid roaming agreement between home network and currently available operators etc.
The SMC modem offers various options to verify the present status of network registration: For example, the AT+COPS command indicates the currently used network. With AT+CREG you can also check the current status and activate an unsolicited result code which appears whenever the status of the network registration changes (e.g. when the ME is powered up, or when the network cell changes).
The <pin> and <new pin> can also be entered in quotation marks (e.g. "1234").
To check the number of remaining attempts to enter the passwords use the AT^SPIC command.
See AT+CPWD and AT^SPWD for information on passwords.
See AT+CLCK and AT^SLCK for information on lock types.
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What to do if PIN or password authentication fails?
PIN1 / PUK1:
After three failures to enter PIN 1, the SIM card is blocked (except for emergency calls). +CME
ERROR: 12 will prompt the client to unblock the SIM card by entering the associated PUK (= PIN
Unblocking Key / Personal Unblocking Key). After ten failed attempts to enter the PUK, the SIM card will be invalidated and no longer operable (the device will respond with: +CME ERROR: 770, which stands for: SIM invalid - network reject). In such a case, the card needs to be replaced. PIN1 consists of 4 to 8 digits, PUK1 is an 8-digit code only. To unblock a disabled PIN1 you have two options:
• You can enter AT+CPIN=PUK1,new PIN1.
• You can use the ATD command followed by the GSM code **05*PUK*newPIN*newPIN#;.
PIN2 / PUK2:
PIN2 prevents unauthorized access to the features listed in AT+CPIN2. The handling of PIN2 varies with the provider. PIN2 may either be a specific code supplied along with an associated PUK2, or a default code such as 0000. In either case, the client is advised to replace it with an individual code.
Incorrect input of PUK2 will permanently block the additional features subject to PIN2 authentification, but usually has no effect on PIN1. PIN2 consists of 4 digits, PUK2 is an 8-digit code only. To unblock a disabled PIN2 you have two options:
• You can enter AT+CPIN2=PUK2,new PIN2.
• You can use the ATD command followed by the GSM code **052*PUK2*newPIN2*newPIN2#;.
Phone lock:
If the mobile was locked to a specific SIM card (= "PS" lock or phone lock), the PUK that came with the SIM card cannot be used to remove the lock. After three failed attempts to enter the correct password, ME returns +CPIN: PH-SIM PUK (= response to read command AT+CPIN?), i.e. it is now waiting for the Master Phone Code. This is an 8-digit device code associated to the IMEI number of the mobile which can only by obtained from the manufacturer or provider. When needed, contact
Cinterion Wireless Modules GmbH and request the Master Phone Code of the specific module. There are two ways to enter the Master Phone code:
• You can enter AT+CPIN=Master Phone Code
• You can use the ATD command followed by the GSM code *#0003*Master Phone Code#;.
Usually, the Master Phone Code will be supplied by mail or e-mail. If the received number is enclosed in the *# codes typically used for the ATD option, it is important to crop the preceding
*#0003* characters and the appended #. Example: You may be given the string
*#0003*12345678#. When prompted for the PH-SIM PUK simply enter 12345678. If incorrectly input, the Master Phone Code is governed by a specific timing algorithm: (n-1)*256 seconds (see table below). The timing should be considered by system integrators when designing an individual
MMI.
Number of failed attempts
1st failed attempt
2nd failed attempt
3rd failed attempt
Time to wait before next input is allowed
No time to wait
4 seconds
3 * 256 seconds
4th failed attempt
5th failed attempt
4 * 256 seconds
5 * 256 seconds
6th failed attempt and so forth 6 * 256 seconds and so forth
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SIM locks:
These are factory set locks, such as "PF", "PN", "PU", "PP", "PC". An 8-digit unlocking code is required to operate the mobile with a different SIM card, or to lift the lock. The code can only be obtained from the provider. Failure to enter the password is subject to the same timing algorithm as the Master Phone Code (see Table above).
Call barring:
Supported modes are "AO", "OI", "OX", "AI", "IR", "AB", "AG", "AC". If the call barring password is entered incorrectly three times, the client will need to contact the service provider to obtain a new one.
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S E C T I O N 7 C A L
L
S E T U P
I
N F O R M A T
I
O
N
This section provides a brief look at setting up variuos call scienerios using the SMC-GPRS modem with the SMC Development/Test board and HyperTerminal. In general, each call scienerio requires a set of initialization commands to set up the SMC modem for the specific call type. See related documents
[1]
and
[2]
for more detailed descriptions and examples for all call types.
Types of calls:
Circuit Switched Data (CSD)
General Packet Radio Service (GPRS)
Short Message Service (SMS)
Internet Services
Socket Client & Server for TCP, Client for UDP
FTP Client
HTTP Client
SMTP Client
POP3 Client
Circuit Switched Data (CSD)
Before proceeding, be sure the cellular provider account can support CSD calls. Before making a CSD call be sure that flow control is enabled using the
AT\Q3
command. All other initialization settings listed below are optional.
AT+CSNS=4
enables calls received without bearer capability element to be accepted as data calls.
ATX
determines whether the ME detects the presence of dial tone and busy signal. If ATX>0 the
CONNECT result code will include the transmission speed.
The
ATS0
command specifies the number of rings before the ME automatically answers incoming data calls. ATS0=3 sets the SMC modem to answer on the third ring.
The
ATS7
command specifies the number of seconds the ME will wait for the completion of call setup when answering or originating a call.
The
ATS10
command sets the time (tenths of seconds) the ME remains connected after having indicated the absence of the data carrier. ATS10=10 would set a 1 second time period.
ATS18
enables extended call release reports indicated every time a fax or data call is released or fails to be established. This is useful especially for MT single numbering scheme calls or calls received from analog devices. An odd number enables the presentation of the extended call release report. Any even number disables this feature.
Use
AT+CRC
to enable or disable the extended format of result codes for incoming call indication. In the case of CSD calls AT+CRC=1 can be used to replace the factory default result code ―RING‖ with the extended format ―+CRING REL ASYNC‖ or ―+CRING FAX‖.
Use
AT+CR
to enable or disable an intermediate result code to report information about the connection when a call is being answered. In a data connection this is the result code "+CR: REL
ASYNC" which is presented before the CONNECT result code.
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Select
ATV0
to set the short format (numeric code) or
ATV1
to set the long format (verbose code) of result codes. In case of using the command without parameter the value will be set to 0.
Generally, only
AT+CBST=0
(auto bauding) and
AT+CBST = 7
(9600 bps, [V.110]) are supported and provide reliable performance. All other settings can be tried, but depending on the network problems may be encountered.
Once a data connection is established, the ME first enters the data mode (online mode). With the escape sequence +++ you can switch from data to command mode without dropping the line. The command ATO returns from command to data mode.
The escape sequence must be preceded and followed by a pause of at least 1000 ms. The +++ characters must be entered in quick succession, all within 1000 ms.
To end a call, the caller or the called party may use the commands ATH or AT+CHUP. The response to ATH and AT+CHUP is ―OK‖ while the remote party is given ―NO CARRIER‖.
CSD Incoming Calls
Depending on the basic initialization, an incoming CSD call is indicated either by the URC ―RING‖
(if AT+CRC=0) or the extended URC format ―+CRING: REL ASYNC‖ (if AT+CRC=1).
An incoming data call can be accepted by entering the command
ATA
or by using the autoanswer mode if enabled with ATS0≠000. Depending on the module's basic initialization, connection setup is indicated by the result code "CONNECT" (if ATX0) or "CONNECT <text>" (if
ATX>0), where <text> gives the transmission speed, for example "CONNECT 9600/RLP". In addiditon, the CONNECT result code may be preceded by the intermediate result code ―+CR: REL
ASYNC‖ if the ME is initialized with AT+CR=1.
CSD Outgoing Calls
The commands used to dial out are ATD, ATDI and ATDL. Do not attach a semicolon ―;‖ at the end of the dial string. Dialing from the phonebooks is not supported for data connections.
When dialing a data call number, the following responses can be returned:
CONNECT (if ATX0) or CONNECT <text> (if ATX>0)
NO CARRIER
BUSY
NO DIALTONE
The response is given when the connection has been set up successfully ("CONNECT"), or when it fails ("NO CARRIER", "BUSY", "NO DIALTONE").
If the module is initialized with AT+CR=1, the additional intermediate result ―+CR: REL ASYNC‖ appears before the CONNECT result code.
When the TA-TE link is reserved (data mode), any URCs, for example an incoming SMS, will be indicated by a BREAK only. The URC itself will be transmitted as soon as the TA-TE link is free again. This means, the URC will be output either when the user switches from data to command mode with +++, or when the line is dropped.
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General Packet Radio Service (GPRS)
Before proceeding, be sure the cellular account SIM is provisioned with GPRS data services and all necessary initialization commands have been executed. The module must then be attached to the
GPRS service, allowing the device to be accessable by the network, but no data transmission is yet possible. Before activating the PDP context, network provider specific context parameters have to be defined. Afterwards the context can be activated and the module can enter the GPRS data mode. At this point data can be exchanged between module and network.
Listed below are initial settings suggested for using GPRS.
AT+CGREG?
queries the status of GPRS network registration. AT+CREG=1 will enable network activation.
AT+CGSMS
specifies the service or service preferences the MT shall use when sending MO SMS messages. AT+CGSMS=0 will select GPRS service.
AT^SGAUTH
sets the authentication type for the PPP connection. The default value is 3 (PAP and
CHAP). To configure the LLC-PDU-length and the GPRS multislot class use AT^SGCONF
The
AT^SCFG
command is used for the following GPRS related settings. Note that AT^SCFG settings illustrated in the examples are valid only if GSM character set is active.
‖GPRS/ATS0/withAttach‖ (on/off)
Specifies whether or not ME will automatically attempt to perform a GPRS attach after receiving the command ATS0=<n> with parameter n>0.
‖GPRS/RingOnIncomingData (on/off)
Specifies if RING line shall be activated when ME receives GPRS IP packets during CYCLIC SLEEP mode AT+CFUN=7 or 8. This solution ensures that incoming GPRS IP packets will prompt the application to wake up from power saving.
‖URC/Ringline/ActiveTime‖ (0/1/2)
:
Specifies duration of RING activation to indicate URCs or incoming GPRS IP packets.
GPRS Attach/Detach
The
AT+CGATT
command enables the ME to attach (=1) or to detach (=0) from the GPRS service. If the ME is already in the requested state, the command is ignored and OK response is returned. Any active PDP Contexts will automatically be deactivated, if the ME detaches from the
GPRS service.
If the ME is not able to attach for more than 5 minutes or to detach for more than 1 minute, the command returns ―ERROR― or ―+CME ERROR: unknown‖, but the ME is still trying to attach/ detach.
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Define the GPRS Context
Exact settings of GPRS context and Quality of Service Profiles are provisioned by the network provider and must be requested before defining the GPRS context. Every PDP context has a context identifier <cid>. The context identifiers are numbered sequentially and have to start with value 1.
AT+CGDCONT
is used to define a context ID and specify the PDP type and Access Point Name
(APN). The PDP type describes the protocol to be used between the ME and the network. The
APN specifies the gateway between mobile network and the internet.
GPRS PDP Context activation/ deactivation
The
AT+CGACT=<state>,<cid>
command activates (state=1) and deactivates (state=0) a specified PDP Context. If a PDP Context is already in the requested state, the state of this context remains unchanged.
If the ME is not yet attached to the GPRS service, the attach will be done before the context activation is executed. If no <cid> is specified (e.g. AT+CGACT=1 or AT+CGACT=0), all defined contexts become activated/deactivated.
In many networks AT+CGACT=1 does not work any longer. Many networks require user name and password for context activation. However these parameters are only handed to module during the PPP traffic and not by AT command. Since the PPP traffic only starts when entering the data mode, it is necessary to enter data mode before the actual PDP context activation request is sent to the network. Use
ATD*99***<cid>#
to do so.
The command
AT+CGPADDR=<cid>
shows the PDP address, which was assigned to the module during the activation process. The address may be static or dynamic.
GPRS Data Mode
Use the
ATD*99***<cid>#
command to go into GPRS data mode.
The PDP context (parameter <cid>) must be defined before via AT+CGDCONT.
If ATD*99***<cid># is entered without specifying a parameter, default parameters will be used.
When entering the GPRS data mode, PPP traffic between the module and the application is transferred. Therefore the application must be capable of handling PPP protocol.
Entering
+++
will switch from data mode or PPP online mode to command mode
Entering
ATO
or
AT+CGDATA
will switch from command mode to data mode
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Short Message Service (SMS)
SMS is a service to transfer short messages between a GSM Mobile Stations (MS) and an Short-
Message-Entity (SME) via a Service Center (SC). SMC modems support two modes: text mode and
Protocal Data Unit (PDU) mode. The minimal requirements to send a short message are:
- Service center address of the provider
- Destination address
- Content of the message
To write or send short messages in text mode the SMC modem must be configured to use text mode, and the service center address must be set.
Writing or sending a short message in PDU mode requires all attributes of the short message to be coded in PDU format.
Initializing SMS
SMC modems support two character sets: the GSM default alphabet defined in GSM 03.38 (7 bit) and the UCS2 character set defined in ISO/IEC10646. To choose one of them use the command
AT+CSCS=<chset>,
where chset is ―GSM‖ or ―UCS2‖.
AT+CMGF
sets the SMS message format. Choose AT+CMGF=1 for text mode, or AT+CMGF=0 for PDU mode.
AT+CSDH
enables the presentation of text mode parameters in the result codes of SMS reading and listing commands.
AT+CSMP
command changes the text mode parameters. You can set the following SMS parameters: first octet, service center time stamp, validity period and the protocol identifier.
The
AT+CSCA
command is used to specify the service center address supplied by the service provider when in text mode. In PDU mode, it is possible to code the service center address in the
PDU itself. Therefore, setting the service center address with AT+CSCA is optional.
AT+CSMS
is used to select the message service. If you want to use SMS features specified in
GSM 07.05 Phase 2+, you need to enable Phase 2+ functionality with ―AT+CSMS‖.
AT+CNMI
is used to enable the presentation of URCs when the module receives a short message, a cell broadcast message or statusreport.
AT^SMGO
is used to enable the presentation of URCs when the SMS storage is full.
AT+CPMS
is used to select the preferred storage for short messages.
AT+CGSMS
selects preferences for transmitting MO short messages over GPRS or circuit switched services.
AT^SSCONF
enables or disables the presentation of the parameters <ra> and <tora> fpr status reports in the result codes of SMS reading and listing commands.
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If you want to receive cell broadcast messages activate the URC presentation for CBS with
AT+CNMI
and subscribe to a CBS channel with
AT+CSCB
.
The
AT^SM20
command specifies different modes of responses returned when sending and writing short messages: AT^SM20=,0 causes the ME return "+CMS ERROR: <err>" when writing or sending of short messages fails. AT^SM20=,1 (factory default) causes the ME to return ―OK‖ no matter whether or not the SMS command was succesfully executed.
Writing SMS
AT+CMGF Select SMS message format
AT^SMGO Set or query SMS overflow presentation mode or query SMS overflow
AT+CSMP Set SMS text mode parameters
AT+CMGW
Write SMS message to memory
Reading SMS
AT+CMGL List SMS messages from preferred storage
AT^SMGL List SMS messages from preferred storage (does not change status)
AT+CMGR Read SMS message
AT^SMGR
Read SMS message (does not change status)
Deleting SMS
AT+CMGL List SMS messages from preferred store (optional)
AT+CMGD
Delete SMS message (mandatory)
Sending SMS
AT+CMGS
Send SMS message
AT+CMSS
Send SMS message from storage
Receiving SMS
AT+CMGR
Read SMS message
AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+
SMS Status Report
There are two ways to activate the presentation of status reports:
- When using PDU mode, status reports can be enabled with the first octet of the PDU.
- When using text mode, you can switch it on with the first parameter (<fo>) of AT+CSMP
To be notified when a status report is received, activate the URC presentation with AT+CNMI.
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Internet Services
The modem has an embedded TCP/IP stack that is driven by AT commands and enables the host application to easily access the Internet. The advantage of this solution is that it eliminates the need for the application manufacturer to implement their own TCP/IP and PPP stacks, thus minimizing cost and time to integrate Internet connectivity into a new or existing host application. This Section is a reference guide to all the AT commands and responses defined for use with the TCP/IP stack. Access is provided to the following Internet Services:
1. Socket Client and Server for TCP, Client for UDP
2. FTP Client
3. HTTP Client
4. SMTP Client
5. POP3 Client
Step-by-step instructions on how to configure and use TCP/IP communications:
First of all, create a connection profile with AT^SICS. The connection profile is a set of basic parameters which determines the type of connection to use for an Internet service. Up to 6 connection profiles can be defined, each identified by the <conProfileId>.
Secondly, use AT^SISS to create a service profile based on one of the connection profiles. Up to
10 service profiles can be defined, each identified by the <srvProfileId>. The service profile specifies the type of Internet service to use, i.e. Socket, FTP, HTTP, or one of the email services
SMTP or POP3. To assign a connection profile to a service profile, the <conProfileId> of AT^SICS must be entered as "conId" value of the AT^SISS parameter <srvParmTag>. This offers great flexibility to combine connection profiles and service profiles. For example, you may have one connection profile (CSD or GPRS) specified with AT^SICS which can be associated with an SMTP service profile for sending emails and a POP3 service profile for retrieving emails.
Once the connection profile and the service profile are created, an Internet session can be opened by entering the AT^SISO write command and the desired <srvProfileId>. Wait for the resulting
URC.
The next command determines the action to be performed, for example reading data with
AT^SISR or writing data with AT^SISW. Wait for the resulting URC.
Finally, to end a session, enter the AT^SISC write command and the <srvProfileId>.
Maximum number of profiles defined / used:
Up to 6 connection profiles can be created (with AT^SICS).
Up to 10 service profiles can be created (with AT^SISS), but the number of parallel profiles of the same service type is limited as listed below. If the maximum number of a service profile type is already defined, any attempt to set up another profile for the same type will be denied with
"+CME ERROR: unknown".
Maximum 3 HTTP profiles
Maximum 6 socket profiles: Only 2 instances can be opened for listener, meaning that if 2 listeners are established another 4 instances can be opened for clients. Also, the socket service can accept an incoming connection only when at least one service profile is still free
(not yet created with AT^SISS), otherwise the incoming connection will be rejected from the listener. If there is no listener established all 6 socket profiles can be configured as client.
1 FTP profile
1 POP3 profile
1 SMTP profile
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The TCP/IP stack of TC63i supports using several service profiles at the same time, provided all of them are running on the same connection profile. For example, it is possible to download files from an FTP server, while sending and receiving emails at the same time.
GPRS connections established over the Dial-Up Network do not use the embedded TCP/IP stack of
TC63i and can be active at the same time. This allows the user to have two parallel GPRS connections: for example, for sending or receiving emails over a GPRS connection enabled by the
TCP/IP stack while, at the same time, surfing the Internet over a Dial-Up Network GPRS connection.
Address notation
Server addresses must be provided as IP addresses in standard dot-format (e.g. "192.168.1.2") or as server address names resolvable by a DNS server (e.g. "smtp.myserver.de" or
"pop3.myserver.de").
Inactivity timeouts
Inactivity timeouts are not part of the Internet AT command functionality implemented in the modem and, if desired, are the responsibility of the host application. It is recommended that the host application validates URCs and AT command responses and reacts adequately, for example by sending a close message or starting a timer.
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S E C T I O N 8 S M C M O D E M M O D U L E P R
O
F I L
E
S
In addition to the default profile, you can store an individual one with AT&W. To alternate between the two profiles enter either ATZ (loads user profile) or AT&F (restores factory profile).
NOTE: Every ongoing or incoming call will be terminated.
Table 8.1: Profile Commands
AT&V
AT&W
AT&F
Returns the current parameter setting. The configuration varies depending on whether or not PIN authentication has been done.
Stores the currently set parameters to a user defined profile in the nonvolatile memory. The user defined profile will be restored automatically after power-up. Use
ATZ
to restore user profile and
AT&F
to restore factory settings. Until the first use of
AT&W
,
ATZ
works as
AT&F
.
AT&W
stores all global settings and the current local settings of the interface, on which the command is executed.
Sets all current parameters to the manufacturer defined profile. Refer to
Section 8, Table 8.1.
ATZ
Sets all current parameters to the user profile stored with
AT&W
. If a connection is in progress, it will be terminated.
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S E C T I O N 9 C O M M O N A T C O M M A N D R
E
F E R E N C E G U I D E
Below you will find a reference guide of the AT commands most commonly used in day-to-day operation of the modem.
Table 9.1: Common AT Commands
Command Description
Configuration Commands
AT&F
AT&V
AT&W
AT^SCFG
ATZ
Set all current parameters to manufacturer defaults
Display current configuration
Stores current configuration to user defined profile
Extended Configuration Settings
Example to enable Persistent Context when setting APN:
AT^SCFG=GPRS/PersistentContexts, 1
Sets all current parameters to the user profile stored with AT&W. If a connection is in progress, it will be terminated.
Serial Interface Control Commands
AT+IPR
Set fixed local baud rate
The write command specifies the bit rate to be used for the interface. When you set a fixed-rate, make sure that both TE (DTE) and TA (DCE) are configured to the same rate.
Example
: AT+IPR=19200
sets the modem baud rate to 19200.
Security Commands
AT+CPIN? PIN Authentication status. Example response; +CPIN: READY
Identification Commands
ATI
Display product identification
Example:
SIEMENS
TC65
REVISION 02.000
AT+CGSN
AT+CNUM
Request International Mobile Equipment Identity (IMEI)
This is the module IMEI number located on the top label.
Read own numbers
Example response; +CNUM: ―My Number‖, ―18052054436‖, 129
AT^SCID
ATD
Display SIM card identification number
Example response; ^SCID: 89014104211640012345
Call Related Commands
ATA Answer a Call
Mobile originated call to specified number
ATD<phone number>; for voice call test. Example:
ATD15075551234;
ATD<phone number> for data call. Example:
ATD15075551234
ATD*99***1# Establish a GPRS connection by service code 99 and using CID 1.
ATH
ATO
Disconnect exsiting connection
Switch from command mode (ie AT commands) to data mode/PPP online mode.
This command is only available during a CSD call or a GPRS connection. The +++ character sequence causes the TA to cancel the data flow over the AT interface and switch to command mode. This allows you to enter AT commands while
+++ maintaining the data connection to the remote device or, accordingly, the GPRS connection. To prevent the +++ escape sequence from being misinterpreted as data, it must be preceded and followed by a pause of at least 1000 ms. The +++ characters must be entered in quick succession, all within 1000 ms.
Switch from data mode to command mode
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Network Service Commands
AT+CSQ
Signal Quality
Example response; +CSQ: 25,0 has an RSSI of -63 dBm
Cell Info Table
Example response:
GPRS Monitor
BCCH G PBCCH PAT MCC MNC NOM TA RAC # Cell #
At^SMONG
0637 1 - 4 234 05 2 00 0B
BCCH - ARFCN of BCCH carrier
G - GPRS status:
0 GPRS not available in currently used cell
1 GPRS available in currently used cell
2 GPRS attached
PBCCH - If PBCCH is present, indication of ARFCN, else ''-''
PAT - Priority Access Threshold (GSM Rec. 04.08 / 10.5.2.37b)
0 Packet access is not allowed in the cell
1 Spare, shall be interpreted as "000" (packet access not allowed)
2 Spare, shall be interpreted as "000" (packet access not allowed)
3 Packet access is allowed for priority level 1
4 Packet access is allowed for priority level 1 to 2
MCC - Mobile Country Code
MNC - Mobile Network Code
NOM - Network Operation Mode (1...3)
TA - Timing Advance Value
RAC - Routing Area Code (as hexadecimal value)
GPRS Service Commands
AT+CGACT
PDP context activate or dactivate
? - Read command returns the current activation states for all the defined PDP contexts.
=0 – Write command is used to deactivate the specified PDP context.
=1 - Write command is used to activate the specified PDP context.
AT+CGATT
AT+CGDATA
AT+CGDCONT
GPRS attach or detach
? - Read command returns the current GPRS service state.
=0 – Write command is used to detach the MT to the GPRS service.
=1 - Write command is used to attach the MT to the GPRS service.
Enter GPRS data state
=? - List of supported <L2P>s
=<L2P>,<cid>, Example:
AT+CGDATA=”PPP”,1
Define PDP Context
=? - Read command returns the current settings for each defined PDP context.
=<cid>, ―IP‖,<APN>,<PDP Address>,0,<PDP Header Commpression>
Example:
AT+CGDCONT=1,”IP”,isp.cingular
sets ‗isp.cingular‘ as the APN
Miscellaneous Commands
A/ Repeat previous command line
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S E C T I O N 1 0 A
T
C O M M A N
D
R E F E R E
N
C
E
All modem functions are controlled using the same industry-standard AT commands that are used to control landline modems. A knowledge of all these commands is not required by most users, but are provided here as a reference.
AT Command Types
There are several types of AT commands as defined in the following list;
Configuration Commands
Status Control Commands
Serial Interface Control Commands
Security Commands
Identification Commands
Call Related Commands
Network Service Commands
Internet Service Commands
GPRS Commands
Short Message Service (SMS) Commands
SIM Related Commands
Hardware Related Commands
The parameters set by the various AT commands in this section are applied to all subsequent calls and will be used each time you place a call. As such, your custom settings (if not saved in a profile) will be available until you power down the modem. These settings are lost upon powerdown if not saved. For further information, refer to the Cinterion TC63i AT Command Set document available from Cinterion.
Command Line Syntax
The "AT" or "at" prefix must be set at the beginning of each command line. To terminate a command line enter <CR>.
Commands are usually followed by a response or, result codes, that includes
"<CR><LF><response><CR><LF>".
Table: 10.1 Command Syntax
AT command type Syntax
Test command AT+CXXX=?
Function
The mobile equipment returns the list of parameters and value ranges set with the corresponding Write command or by internal processes.
Read command
Write command
Exec(ution) command
AT+CXXX?
This command returns the currently set value of the parameter or parameters.
AT+CXXX=<...> This command sets user-definable parameter values.
AT+CXXX
The execution command reads non-variable parameters determined by internal processes in the
GSM engine.
Commands may be edited using the backspace key, but the backspace will not delete the AT attention command at the beginning of the command line.
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Result Codes
After issuing a command, a result code will typically be displayed on the screen to inform you if the command was successful, unsuccessful, improperly formatted, etc. When in the command mode, thirteen possible result codes may be returned. The result codes can be set to display as either digits or words by accessing the Verbose command,
ATV
. The digit code is returned when the Verbose mode is OFF (ATV0); the word code is returned when Verbose is ON (ATV1). See table 10.2 for more information on Verbose format.
Table: 10.2 Result Codes
Numeric
0
1
2
3
4
6
7
47
48
49
50
Verbose
OK
CONNECT
RING
NO CARRIER
ERROR
NO DIALTONE
BUSY
CONNECT 2400/RLP
CONNECT 4800/RLP
CONNECT 9600/RLP
Description
Command executed without errors.
Link established.
Ring detected.
Link not established or disconnected.
Invalid command or command line too long.
No dial tone, dialling impossible, wrong mode.
Remote station busy.
Link with 2400 bps and Radio Link Protocol.
Link with 4800 bps and Radio Link Protocol.
Link with 9600 bps and Radio Link Protocol.
CONNECT 14400/RLP Link with 14400 bps and Radio Link Protocol.
ALERTING
DIALING
^SYSSTART
Alerting at called phone
Mobile phone is dialing
Modem power up indication
Configuration Commands
These commands control the basic configuration of the modem. The parameters can only be read back by the AT&V command when in command state. The following table shows the command format.
Table 10.3: Configuration Commands
Command Description
AT&F
AT&V
Sets all current parameters to the manufacturer defined profile.
Returns the current parameter setting. The configuration varies depending on whether or not PIN authentication has been done and whether or not Multiplex mode is enabled
AT&W
ATQ
Stores the currently set parameters to a user defined profile in the non-volatile memory.
Set result code presentaion mode:
0 - DCE transmits result code
1 - Result codes are suppressed and not transmitted
ATV
ATX
This command determines the contents of header and trailer transmitted with
AT command result codes and information responses.
0 – Numeric Result Code information response
1 – Verbose Result Code information response
Set CONNECT result code format and call monitoring:
0 - CONNECT result code only returned, dial tone and busy detection are both disabled.
1 - CONNECT <text> result code only returned, dial tone and busy detection are both disabled.
2 - CONNECT <text> result code returned, dial tone detection is enabled, busy detection is disabled.
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3 - CONNECT <text> result code returned, dial tone detection is disabled, busy detection is enabled.
4 - CONNECT <text> result code returned, dial tone and busy detection are both enabled.
AT\V
ATZ
Set CONNECT result code format:
0 - CONNECT <text> result code returned without RLP trailer.
1 - CONNECT <text> result code returned with RLP trailer.
Sets all current parameters to the user profile stored with
AT&W
. If a connection is in progress, it will be terminated.
Sets phone functionality:
AT+CFUN=0
NON-CYCLIC SLEEP mode
AT+CFUN
AT+CFUN=1
Full functionality
AT+CFUN=7
CYCLIC SLEEP mode, In this mode, the serial interface is shortly enabled while CTS is active. If characters are recognized on the serial interface, the ME stays active for 2 seconds after the last character was sent or received.
ME exits SLEEP mode only, if AT+CFUN=1 is entered.
AT+CFUN=9
CYCLIC SLEEP mode, In this mode, the serial interface is shortly enabled while CTS is active. If characters are recognized on the serial interface, the ME stays active after the last character was sent or received for at least the time, which can be configured by
AT^SCFG="PowerSaver/Mode9/Timeout",<psm9to> (temporary wakeup). In contrast to SLEEP mode 7 assertion of RTS can also be used to temporarily wake up the ME.
AT+CFUN=1,1
will re-start the SMC modem and clear volitile memory.
AT^SMSO Initiates the power-off procedure.
AT+GCAP Request complete TA capabilities list.
AT+CMEE
AT+CSCS
AT^SCFG
AT^SM20
Mobile Equipment Error Message Format:
AT+CMEE=0
Disable result code, i.e. only "ERROR" will be displayed.
AT+CMEE=1
Enable error result code with numeric values.
AT+CMEE=2
Enable error result code with verbose (string) values.
Select TE character set:
AT+CSCS=“GSM“
GSM default alphabet (GSM 03.38 subclause 6.2.1); Note:
This setting may cause software flow control problems since the codes used to stop and resume data flow (XOFF = decimal 19, XON = decimal 17) are interpreted as normal characters.
AT+CSCS=“UCS2“
16-bit universal multiple-octet coded character set
(ISO/IEC10646 [32]); UCS2 character strings are converted to hexadecimal numbers from 0000 to FFFF; e.g. "004100620063" equals three 16-bit characters with decimal values 65, 98 and 99, $(AT R97)$
Extended Configuration Settings:
The
AT^SCFG?
read command returns a list of all supported parameters and their current values.
The
AT^SCFG=
write command queries a configuration parameter (if no value is entered) or sets its value(s). Input of parameter names is always coded in
GSM character set, parameter values are expected to be given as specified via
AT+CSCS.
Sets M20 compatibility mode:
AT^SM20=
<CallMode>, <CmgwMode>
0 - Set compatibility to Siemens mobile phones.
1 - Default mode
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Status Control Commands
The AT Commands described in this section allow the external application to obtain various status information from the modems cellular module.
Table 10.4: Status Control Commands
Command Description
Mobile Equipment Event Reporting:
AT+CMER
AT+CMER=
<mode>,0,0,<ind>,0
Mode:
0 - Discard "+CIEV" and "^SLCC" URCs.
1 - Discard "+CIEV" and "^SLCC" URCs when TA-TE link is reserved, e.g. in online data mode. Otherwise they are forwarded directly to the TE.
2 - Buffer "+CIEV" and "^SLCC" URCs in the TA while TA-TE link is reserved, e.g. in online data mode, and flush them to the TE afterwards. Otherwise they are forwarded directly to the TE.
3 - Forward "+CIEV" and "^SLCC" URCs directly to the TE. If SMC modem is in
AT+CIND online data mode, URCs are signaled via sending BREAK (100ms) and stored in a buffer. Once it is back in command mode e.g. after +++ was entered, all
URCs stored in the buffer will be output.
Ind:
0 - Disable indicator event reporting.
2 - Enable indicator event reporting.
The command controls the presentation of Indicator Event Reports related to various functions such as battery charge level, signal quality, service availability, sound generation, indication of unread short messages, full SMS storage, call in progress or roaming activities.
AT^SIND
AT+CEER
ATS18
AT+CPAS
The read command provides a list of all indicators supported by AT+CIND and
AT^SIND. Each indicator is represented with its registration mode and current value.
The write command can be used to select a single indicator in order to modify its registration and to view the current value.
The command returns an extended error report regarding the reason of the last;
• call release
• failure to set up a call (both mobile originated or terminated)
• failure to modify a call by using Supplementary Services
• failed attempt to activate, register, query, deactivate or deregister a
Supplementary Service
• unsuccessful GPRS attach or unsuccessful PDP context activation
• GPRS detach or PDP context deactivation
Controls the presentation of extended call release reports for circuit switched fax and data calls. Extended call release reports related to voice calls are controlled via AT+CEER.
Mobile equipment activity status:
0 - Ready
3 - Incoming call (ringing)
4 - Call in progress or call hold
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Serial Interface Control Commands
The AT Commands described in this section allow the external application to determine various settings related to the modems's serial interface.
Table 10.5: Serial Interface Control Commands
Command Description
Flow control:
AT\Q
0 - Disable flow control
1 - XON/XOFF software flow control
2 - Only CTS by DCE (TA)
3 - RTS/CTS hardware flow control
Recommended for the following procedures: incoming or outgoing data calls, fax calls, MUX mode. Often, the initialization routine of Fax programs includes enabling RTS/CTS handshake, eliminating the need to issue AT\Q3 once again.
AT&C
AT&D
AT&S
ATE
AT+ICF
AT+IFC
Set circuit Data Carrier Detect (DCD) function mode:
0 - DCD line is always ON
1 - DCD line is ON in the presence of data carrier only
Set circuit Data Terminal Ready (DTR) function mode:
0 - TA ignores status of DTR.
1 - ON->OFF on DTR: Change to command mode while retaining the connected call.
2 - ON->OFF on DTR: Disconnect data call, change to command mode. During state DTR = OFF auto-answer is off.
Set circuit Data Set Ready (DSR) function mode:
0 - DSR line is always ON
1 - TA in command mode: DSR is OFF.
TA in data mode: DSR is ON.
Enable command echo:
0 - Echo mode off
1 - Echo mode on
Serial Interface Character Framing:
=5,1 7 bits, even parity, 1 stop bit
=5,0 7 bits, odd parity, 1 stop bit
=2,1 8 bits, even parity, 1 stop bit
=3 8 bits, no parity, 1 stop bit
=2,0 8 bits, odd parity, 1 stop bit
=1 8 bits, no parity, 2 stop bits
Set Flow Control separately for data directions:
AT+IFC=
<TEflowcontrol>, <TAflowcontrol>
TEflowcontrol:
0 - none
1 - XON/XOFF, terminate flow control in the Cellular Engine
2 - RTS line
3 - XON/XOFF, evaluate flow control in the Cellular Engine and pass it through
(over the air) to the opposite TE
TAflowcontrol:
0 - none
1 - XON/XOFF
2 - CTS line
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AT+ILRR
Set TE-TA local rate reporting:
0 - Disables reporting of local port rate
1 - Enables reporting of local port rate
300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600,
115200, 230400, 460800 rates supported
AT+IPR
AT^STPB
Set fixed local rate:
300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600,
115200, 230400, 460800 rates supported
Transmit Parity Bit (for 7E1 and 7O1 only):
0 - The parity bit will not be transmitted over the air and will be replaced with 0.
This mode is the default setting if 7E1 or 7O1 is activated with AT+ICF.
1 - In a data connection 8 bits will be transmitted, including the parity bit, i.e. the parity bit will be properly transmitted over the air. The setting shall be used if problems are encountered when TC65 is running in the default 7E1 or 7O1 mode enabled with AT+ICF. In this case, AT^STPB=1 shall be set in addition to the 7E1 or 7O1 settings selected with AT+ICF.
Security Commands
The AT Commands described in this section allow the external application to determine various security related settings.
Table 10.6: Security Commands
Command Description
PIN Authentication:
AT+CPIN?
command returns an alphanumeric string indicating whether or not
AT+CPIN network authentication is required.
AT+CPIN=
<pin>,<new pin> command allows the modem to store the entered password.
AT+SPIC
AT+CLCK
AT+CPWD
Display PIN counter:
Command used to find out whether the ME is waiting for a password and, if so, how many attempts are left to enter the password.
Facility lock:
Command can be used to lock, unlock or interrogate a network or ME <facility>.
The command can be aborted when network facilities are being set or interrogated. The facility for the SIM PIN is ―
SC
‖.
Change Password:
AT+CPWD=
<facility>, <old password>, <new password>
Command allows user to define a new password for a password protected
<facility> lock function. Each password is a string of digits, the length of which varies with the associated <facility>. The test command returns a list of pairs which represent the available facilities and the maximum length of the associated password. The facility for the SIM PIN is ―
SC
‖.
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Identification Commands
The AT Commands described in this section allow the external application to obtain various identification information related to the modem and linked entities.
Table 10.7: Identification Commands
Command Description
The execute command delivers product information text.
ATI The 'Revision' information consists of the following parts: Version xx and variant yy of software release.
AT+CGMI Request manufacturer identification (GSM 07.07)
AT+GMI Request manufacturer identification (V.250)
AT+CGMM Request model identification (GSM 07.07)
AT+GMM Request model identification (V.250)
AT+CGMR Request revision identification of software status (GSM 07.07)
AT+GMR Request revision identification of software status (V.250)
AT+CGSN Request International Mobile Equipment Identity (IMEI) (GSM 07.07)
AT+GSN Request International Mobile Equipment Identity (IMEI) (V.250)
AT+CIMI Request International Mobile Subscriber Identity (IMSI) (GSM 07.07)
Call Related Commands
The AT Commands described in this section are related to Mobile Originated (MOC, i.e. outgoing)
Calls and Mobile Terminated (MTC, i.e. incoming) Calls.
Table 10.8: Call Related Commands
Command Description
ATA
Answer a call:
TA causes remote station to go off-hook (e.g. answer call).
Mobile originated call to specified number:
ATD
This command can be used to set up outgoing voice, data or fax calls.
ATD
<n><mgsm>
n:
String of dialing digits and optional V.250 modifiers: 0-9, *, #, +, A, B, C The following V.250 modifiers are ignored: ,(comma), T, P, !, W ,@ Emergency call :
<n> = 112, 911 or 08, standardized GSM emergency number (no SIM needed).
mgsm(optional):
String of GSM modifiers:
I - Activates CLIR (disables presentation of own phone number to called party) i - Deactivates CLIR (enables presentation of own phone number to called party)
G - Activate Closed User Group explicit invocation for this call only. g - Deactivate Closed User Group explicit invocation for this call only.
Mobile originated call to ISDN number:
ISDN number: String with maximum length of 20 characters. Allowed ATDI
ATDL
ATH characters: +, 0-9, A, B, C.
Redial last number used in the ATD command.
Disconnect existing connection
AT+CHUP Cancels all active and held calls. (Hang up call)
AT+SHUP Hang up call(s) indicating a specific GSM04.08 release cause.
Set number of rings before automatically answering a call:
ATS0 =000 Automatic answer mode is disabled.
=001-255 Enable automatic answering after specified number of rings.
ATS6
Set pause before blind dialing:
=000 to 255
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ATS7
ATS8
ATS10
ATO
+++
AT+CBST
AT+CRLP
AT+CLCC
AT+CR
At+CRC
Set number of seconds to wait for connection completion:
=000 to 060
Set number of seconds to wait for comma dialing modifier:
=0 DCE does not pause when "," encountered in dial string
=1 to 255 Number of seconds to pause
Set disconnect delay after indicating the absence of data carrier:
=001 to 254 Number of tenths of seconds of delay
Switch from command mode to data mode / PPP online mode:
ATO is the corresponding command to the +++ escape sequence: When you have established a CSD call or a GPRS connection and TA is in command mode,
ATO causes the TA to resume the data or GPRS connection and takes you back to data mode or PPP online mode.
Switch from data mode to command mode:
This command is only available during a CSD call or a GPRS connection. The
+++ character sequence causes the TA to cancel the data flow over the AT interface and switch to command mode. This allows you to enter AT commands while maintaining the data connection to the remote device or, accordingly, the
GPRS connection. To prevent the +++ escape sequence from being misinterpreted as data, it must be preceded and followed by a pause of at least
1000 ms. The +++ characters must be entered in quick succession, all within
1000 ms.
Select bearer service type:
AT+CBST=
<speed>
speed:
=1 300 bps (V.21)
=2 1200 bps (V.22)
=4 2400 bps (V.22bis)
=6 4800 bps (V.32)
=7 9600 bps (V.32)
=14 14400 bps (V.34)
=65 300 bps (V.110)
=66 1200 bps (V.110)
=68 2400 bps (V.110)
=70 4800 bps (V.110)
=71 9600 bps (V.110)
=75 14400 bps (V.110)
Select radio link protocol parameters for originated non-transparent data calls.
List current calls of ME:
The execute command returns a list of current calls of ME. If command is successful, but no calls are available, no information response is sent to TE.
Service reporting control:
Configures the TA whether or not to transmit an intermediate result code +CR:
<serv> to TE when a call is being set up.
=0 Disable
=1 Enable
Setting the value to 1 may lead to connection failure, if the application (e.g.
WinFax) waits for default result code/URC.
Set Cellular Result Codes for incoming call indication:
The command controls whether or not to use the extended format of incoming call indication.
=0 Disable extended format
=1 Enable extended format
Setting the value to 1 may lead to connection failure, if the application (e.g.
WinFax) waits for default result code/URC.
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AT+CSNS
AT^SCNI
AT^SLCD
AT^STCD
Single Numbering Scheme:
The command enables the ME to accept incoming calls when no bearer capability information is provided with the call, e.g. single numbering scheme calls or calls originitating from analog devices.
=0 Voice: Each call received without bearer element is assumed to be speech
=2 Fax: Each call received without bearer element is assumed to be an incoming fax.
=4 Data: Each call received without bearer element is assumed to be a data call. Please take into account that the bearer service parameters set with
AT+CBST applies to all data calls including those received without bearer capability.
List Call Number Information:
TA returns a list of current calls of ME.
Display Last Call Duration:
TA returns last call duration or current call duration.
Display Total Call Duration:
TA returns total call duration (accumulated duration of all calls).
ATP Select pulse dialing.
ATT Select tone dialing.
Network Service Commands
The AT Commands described in this section are related to various network services. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.9: Network Service Commands
Command Description
AT+COPN
Read operator names:
The command returns the list of operator names from the ME.
AT+COPS
Operator Selection:
The command queries (?) the present status of the modem's network registration and sets whether automatic or manual network selection shall be used.
AT+COPS=
<mode>, <format>, <oper>
mode:
0 - Automatic mode; <oper> field is ignored.
1 - Manual operator selection
Write command requires <oper> in numeric format, i.e. <format> shall be 2.
Read command returns the current <mode> and the currently selected <oper>.
If no operator is selected, <format> and <oper> are omitted.
2 - Manually deregister from network and remain unregistered until <mode>=0 or 1 or 4 is selected.
3 - Set only <format> (for AT+COPS read command).
4 - Automatic / manual selection; if manual selection fails, automatic mode
(<mode>=0) is entered (<oper> field will be present).
format:
0 - Long alphanumeric format of <oper>. Can be up to 16 characters long.
2 - Numeric format of <oper>. This is the GSM Location Area Identification (LAI) number, which consists of the 3-digit Mobile Country Code (MCC) plus the 2- or
3-digit Mobile Network Code (MNC).
oper:
Name in numeric format
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AT^SOPS
AT+CREG
AT+CSQ
AT^SMONC
AT^SMOND
AT^MONI
Extended Operator Selection similar to At^COPS.
Network registration:
The read (?) command serves to verify the network registration status of the
ME.
0 - Not registered, ME is currently not searching for new operator and user intervention is required. Yet, emergency calls can be made if any network is available.
1 - Registered to home network
2 - Not registered, but ME is currently searching for a new operator
3 - Registration denied, Either the SIM or the MS or the ME are unable to log into any network. No further attempt is made to search or log into a network.
User intervention is required. Emergency calls can be made, if any network is available.
4 - Unknown (not used)
5 - Registered, roaming. The ME is registered at a foreign network (national or international network)
The write command is as follows:
=0 Disable +CREG Unsolicited Result Codes (URC)
=1 Enable URC +CREG:<stat> to report status of network registration
=2 Enable URC +CREG:<stat>[,<lac>,<ci>] to report status of network registration including location information. Optional parameters <lac> and <ci> will not be displayed during calls or if these values have not changed since last
AT+CREG read command or since last indication by +CREG URC
Signal quality:
The execute command indicates the received signal strength <rssi> and the channel bit error rate <ber>.
rssi:
0 -113 dBm or less
1 -111 dBm
2..30 -109... -53 dBm
31 -51 dBm or greater
99 not known or not detectable
ber:
0..7 as RXQUAL values
99 not known or not detectable
Cell Monitoring:
The execute command delivers cell information containing 9 values from a maximum of 7 base stations. The first base station is the serving cell.
Cell Monitoring:
The execute command can be used to obtain status information of the service cell and up to six neighbour cells. The advantage over other cell monitoring commands is that AT^SMOND delivers more detailed information about the received signal strength.
Monitor idle mode and dedicated mode:
The command supplies information of the serving/dedicated cell. There are two ways to retrieve the information: once on request by using the execute command or automatically every <period> seconds by using the write command. To stop the periodic presentation type "AT" or "at".
=1 to 254 periods in seconds
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AT^MONP
AT^SMONG
AT^SHOM
AT^SPLM
AT+CPOL
AT^SPLR
AT^SPLW
Monitor neighbour cells:
The command supplies information of up to six neighbour cells. There are two ways to retrieve the information: once on request by using the execute command or automatically every <period> seconds by using the write command. To stop the periodic presentation type "AT" or "at".
=1 to 254 periods in seconds
GPRS Monitor:
The command supplies GPRS specific cell information. There are two ways to retrieve the information: once on request by using the execute command or automatically every <period> seconds by using the write command. To stop the periodic presentation type "AT" or "at".
=1,1 to 100 periods in seconds
Display Homezone:
The returns the homezone state. The result is valid only, if network registration state <stat> is 1 (registered) (see AT+CREG).
0 - ME is out of Homezone
1 - ME is within the Homezone
Read the PLMN list:
The execute command returns the list of operators from the ME.
Preferred Operator List:
The read command returns the list of the preferred operators.
The write command allows user to edit the list of the preferred operators. If
<index> is given but <operator> is left out, the entry is deleted. An operator can be only once in the list.
AT+CPOL=
<index>, 2, <operator>
index:
The order number of the operator in the SIM preferred operator list.
operator:
Operator in numeric format (GSM Location Area Identification number which consists of a 3-digit country code plus a 2- or 3-digit network code).
Read entry from the preferred operators list:
The write command returns used entries from the SIM list of preferred operators with <indexa> between <index1> and <index2>. If <index2> is not given, only entry at <index1> is returned. The test command returns the whole index range supported by the SIM.
AT^SPLR=
<index1>, <index2>
index1:
Location number to start reading from
index2:
Location number where to stop reading
Write an entry to the preferred operators list:
The write command writes an entry to the SIM list of preferred operators at location number <index>. If <index> is given but <oper> is left out, the entry is deleted. An operator can be only once in the list. Test command returns the whole index range supported by the SIM.
AT^SPLW=
<index>, <oper>
index:
location number
oper:
Operator in numeric format (GSM Location Area Identification number which consists of a 3-digit country code plus a 2- or 3-digit network code).
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Internal Internet Service Commands
A brief description of the internet service commands are provided in Table 10.10. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.10: Internet Service Commands
Command Description
Internet Connection Close:
AT^SICC
AT^SICI
The write command releases a connection opened with AT^SICO and restores the previously set inactivity timeout "inactTO" of the selected connection profile.
Internet Connection Information:
The read command requests the current status of the Internet connection profiles currently defined with AT^SICS. The write command displays the status of the specified Internet connection profile.
AT^SICO
AT^SICS
AT^SISS
AT^SISE
AT^SISO
AT^SISC
AT^SISI
AT^SISR
AT^SISW
At^SISX
Internet Connection Open:
The write command opens a connection profile (also referred to as bearer). A connection opened with AT^SICO remains open until closed with AT^SICC or, in case of inactivity, disconnected by the network.
Internet Connection Setup Profile:
The command serves to create and edit Internet connection profiles.
Internet Service Setup Profile:
The command serves to set up the necessary parameters in the Internet service profiles.
Internet Service Error Report:
The write command returns the current error status of the specified Internet service profile.
Internet Service Open:
The write command starts the Internet session configured by the service profile.
Internet Service Close:
The write command performs all necessary action to release all properties activated by AT^SISO.
Internet Service Information:
The read command requests the current status of all defined Internet service profiles. The write command requests the status of the specified Internet service profile.
Internet Service Read Data:
The write command triggers reading data via the Internet service configured with AT^SISS.
Internet Service Write Data:
The write command triggers writing data via the Internet service configured configured with AT^SISS.
Internet Service Execution:
The write command sends ICMP (Internet Control Message Protocol) Echo
Requests to a target IP address or host name (also referred to as Ping command).
AT^SISX=‖Ping‖,0,<host name or IP address>
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GPRS Commands
This Section describes AT Commands that a TE (Terminal Equipment, e.g. an application running on a controlling PC) may use to control the modem acting as a GPRS Mobile Termination (MT).
A brief description of the GPRS commands are provided in Table 10.11. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.11: GPRS Commands
Command Description
AT+CGACT
PDP context activate or deactivate:
The test command is used for requesting information on the supported PDP context activation states.
The read command returns the current activation states for all the defined PDP contexts.
The write command is used to activate or deactivate the specified PDP context(s). After the command has completed, the MT remains in V.250 command state. If any PDP context is already in the requested state, the state
AT+CGANS
AT+CGATT for that context remains unchanged. If the MT is not GPRS attached when the activation form of the command is executed, the MT first performs a GPRS attach and then attempts to activate the specified contexts. If no <cid>s are specified the activation/deactivation form of the command activates/deactivates all defined contexts.
=0 deactivated
=1 activated
Manual response to a network request for PDP context activation:
The write command requests the MT to respond to a network request for GPRS
PDP context activation which has been signaled to the TE by the RING or CRING unsolicited result code. The <response> parameter allows the TE to accept or reject the request.
=0 the request is rejected and the MT returns OK to the TE
=1 accept and request that the PDP context be activated
GPRS attach or detach:
The test command is used for requesting information on the supported GPRS service states.
The read command returns the current GPRS service state.
The write command is used to attach the MT to, or detach the MT from the
GPRS service. After the command has completed, the MT remains in V.250 command state. If the MT is already in the requested state, the command is ignored and the OK response is returned. Any active PDP contexts will be automatically deactivated when the attachment state changes to detached.
=0 detached
=1 attached
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AT+CGAUTO
AT+CGDATA
AT+CGDCONT
Automatic response to a network request for PDP context activation:
The test command returns the values of <n> supported by the MT as a compound value.
The write command disables or enables an automatic positive response (autoanswer) to the receipt of a Request PDP Context Activation message from the network. It also provides control over the use of the V.250 basic commands
ATS0, ATA and ATH for handling network requests for PDP context activation.
=0 Disable automatic response for network requests for GPRS PDP context activation. GPRS network requests are manually accepted or rejected by the
AT+CGANS command.
=1 Enable automatic response for network requests for GPRS PDP context activation. GPRS requests are automatically accepted according to the description below.
=3 Modem compatibility mode. The automatic acceptance of both GPRS and incoming CSD calls is controlled by the ATS0 command. Manual control uses the
ATA and ATH commands, respectively, to accept or reject GPRS network requests or incoming CSD calls.
Enter data state:
The test command is used for requesting information on the supported layer 2 protocols to be used between the TE and MT.
The write command causes the MT to perform all actions which are necessary to establish communication between the TE and the network using one or more
GPRS PDP types. This may include performing a GPRS attach and one or more
PDP context activations. Commands following the AT+CGDATA command in the
AT command line will not be processed by the MT.
=―PPP― layer 2 protocol PPP supported
Define PDP Context:
The test command returns supported values as a compound value.
The read command returns the current settings for each defined PDP context.
The write command specifies the parameters for a PDP context identified by the context identifier <cid>. The number of contexts that may be in a defined state at the same time is given by the range returned by the test command. A special form of the write command (AT+CGDCONT=<cid>) causes the values for context <cid> to become undefined.
AT+CGDCONT=
<cid>,‖IP‖,<APN>,<PDP_addr>,0,<h_comp>
cid:
PDP Context Identifier, 1 or 2
APN:
Access Point Name
PDP_addr:
Packet Data Protocol address
h_comp:
0 - header compression off
1 - header compression on
AT+CGEQMIN 3G Quality of Service Profile (Minimum acceptable)
AT+CGEQREQ 3G Quality of Service Profile (Requested)
AT+CGPADDR Show PDP address
AT+CGQMIN Quality of Service Profile (Minimum acceptable)
AT+CGQREG Quality of Service Profile (Requested)
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AT+CGREG
AT+CGSMS
AT^SGACT
AT^SGAUTH
AT^SGCONF
ATA
GPRS network registration status:
The read command returns the status of result code presentation and an integer
<stat> which shows whether the network has currently indicated the registration of the MT.
The write command controls the presentation of an unsolicited result code
"+CGREG: <stat>" when <n>=1 and there is a change in the MT's GPRS network registration status.
Select service for MO SMS messages:
The test command is used for requesting information on which services and service preferences can be set by using the AT+CGSMS write command
The read command returns the currently selected service or service preference.
The write command is used to specify the service or service preference that the
MT will use to send MO SMS messages. If parameter <service> is not given, the current value remains unchanged.
=0 GPRS
=1 Circuit switched
=2 GPRS preferred (use circuit switched SMS transfer if GPRS SMS transfer is not possible, for example when the mobile is not GPRS attached or the network does not support SMS over GPRS)
=3 Circuit switched preferred (use GPRS if circuit switched is not available)
Query all PDP context activations:
The test command returns supported interfaces and states.
The read command lists the activation states for all activated PDP contexts of the ME. Contexts, which are created internally by the GPRS modem compatibility commands, will displayed only, if they are activated. The Output of this command is unsorted.
The exec command returns the sum of all activated PDP contexts of the ME.
Set type of authentication for PPP connection:
=0 none
=1 PAP
=2 CHAP
=3 PAP and CHAP
Configuration of GPRS related Parameters:
AT^SGCONF=
<llc_pdu_length_U>,<llc_pdu_length_I>,<GPRS msclass>
llc_pdu_length_U:
0 - no negotiation with network (500 will be used)
140...1520 - lower values diminish performance
llc_pdu_length_I:
0 - no negotiation with network (500 will be used)
140...1520 - lower values diminish performance
GPRS msclass:
GPRS Multislot Class. The parameter can be changed only when the MT is detached, otherwise ''CME ERROR: operation temporary not allowed'' will be returned. The value can be one of the classes indicated with the Test command.
The value set is volatile and powerup value is the maximum allowed.
Manual response to a network request for PDP context activation:
The command may be used to accept a network request for a PDP context activation announced by the unsolicited result codes "RING" or "+CRING:
GPRS".
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ATD
ATH
ATS0
Request GPRS or GPRS IP service:
This command causes the MT to perform whatever actions are necessary to establish a communication between the TE and the external PDN.
Request GPRS service:
ATD*99**
<L2P>
*
<cid>
#
L2P:
blank – non PPP
―PPP― - layer 2 protocol PPP
―1― - layer 2 protocol PPP
cid:
1 – typically, set by AT+CGDCONT command.
Request GPRS IP service:
ATD*98*
<cid>
#
cid:
1 – typically, CID defined by AT+CGDCONT command.
Manual rejection of a network request for PDP context activation:
The command may be used to deactivate all PDP contexts which are active or online on the same interface.
Automatic response to a network request for PDP context activation:
The Automatic answer command may be used to turn off (n=0) and on (n>0) the automatic response to a network request for a PDP context activation.
=000 Disables automatic answer mode.
=001-255 Enables automatic answering after specified number of rings.
Short Message Service (SMS) Commands
The AT Commands described in this section allow an external application to use the Short Message
Service with the modem.
A brief description of the GPRS commands are provided in Table 10.12. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.12: SMS Command Reference
Command Description
AT+CMGC
AT+CMGD
AT+CMGF
AT+CMGL
Send an SMS command
Delete SMS message
Select SMS message format
List SMS messages from preferred store
AT+CMGR
AT+CMGS
AT+CMGW
AT+CMSS
AT+CNMA
AT+CNMI
AT+CPMS
AT+CSCA
AT+CSCB
AT+CSDH
AT+CSMP
AT+CSMS
AT^SCML
AT^SCMR
Read SMS messages
Send SMS message
Write SMS messages to memory
Send SMS messages from storage
New SMS message acknowledge to ME/TE, only phase 2+
New SMS message indications
Preferred SMS message storage
SMS service centre address
Select Cell Broadcast Message Indication
Show SMS text mode parameters
Set SMS text mode parameters
Select Message Service
List Concatenated SMS messages from preferred store
Read concatenated SMS messages
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AT^SCMS
AT^SCMW
AT^SLMS
AT^SMGL
Send concatenated SMS messages
Write concatenated SMS messages to memory
List SMS Memory Storage
List SMS messages from preferred store without setting status to REC READ
AT^SMGO
AT^SMGR
Set or query SMS overflow presentation mode or query SMS overflow
Read SMS message without setting status to REC READ
AT^SSCONF SMS Command Configuration
AT^SSDA Set SMS Display Availability
AT^SSMSS Set Short Message Storage Sequence
SIM Related Commands
The AT commands described in this section are related to the Subscriber Identity Module (SIM) connected to the modem.
A brief description of the SIM related commands are provided in Table 10.13. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.13: SIM Related Commands
Command Description
AT+CRSM
AT^SXSM
Restricted SIM Access:
The command offers easy access of the Elementary Files on the SIM. Access to the SIM database is restricted to the commands which are listed;
176 READ BINARY
178 READ RECORD
192 GET RESPONSE
214 UPDATE BINARY
220 UPDATE RECORD
242 STATUS
Extended SIM Access:
AT^SXSM extends AT+CRSM with additional SIM commands;
136 RUN GSM ALGORITHM
Start the authentication mechanism and cipher key generation on the SIM. It runs the algorithms A3 and A8 using a 16 byte random number and the subscriber authentication key Ki, which is stored in the SIM.
AT^SCKS
AT^SSET
AT^SCID
AT+CXXCID
Query SIM and Chip Card Holder Status:
This command controls the SIM connection presentation mode and queries the connection status of the SIM and the card holder tray of the modem.
Indicate SIM data ready:
After power-up and personalization (PIN entry if required) the ME starts reading data from SIM. The AT^SSET command controls the presentation of the "^SSIM
READY" URC which indicates, on the corresponding serial channel, when the ME has finished reading SIM data. Afterwards all commands that depend on SIM data fields can be used.
Display SIM card identification number:
TA returns the card identification number in SIM as string type.
Display card ID:
TA returns the card identification number in SIM as string type.
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Hardware Related Commands
The AT Commands described in this section are related to the modems's hardware interface.
A brief description of hardware related commands are provided in Table 6.14. For futher information, refer to the Cinterion TC63i AT Command Set document available from Cinterion
[2]
.
Table 10.14: Hardware Related Commands
Command Description
AT+CCLK
Real Time Clock:
Format is "yy/mm/dd,hh:mm:ss", where the characters indicate the two last digits of the year, followed by month, day, hour, minutes, seconds; for example
6th of July 2005, 22:10:00 hours equals to "05/07/06,22:10:00" Factory default is "02/01/01,00:00:00"
Write command:
=<time>
• <time> is retained if the device enters the Power Down mode via AT^SMSO.
• <time> will be reset to its factory default if power is totally disconnected. In this case, the clock starts with <time>= "02/01/01,00:00:00" upon next powerup.
• Each time SMC modem is restarted it takes 2s to re-initialize the RTC and to update the current time. Therefore, it is recommended to wait 2s before using the commands AT+CCLK and AT+CALA (for example 2s after ^SYSSTART has been output).
AT+CALA
AT^SCTM
Set alarm time:
The write command can be used to set an alarm time in the ME or to clear a programmed alarm. When the alarm time is reached and the alarm is executed the ME returns an Unsolicited Result Code (URC) and the alarm time is reset to
"00/01/01,00:00:00".
Set critical operating temperature presentation mode or query temperature:
Use this command to monitor the temperature range of the module. The write command enables or disables the presentation of URCs to report critical temperature limits.
Write command:
=0 Presentation of URCs is disabled (except for <m> equal to -2 or +2).
=1 Presentation of URCs is enabled.
Read command:
-2 Below lowest temperature limit (causes immediate switch-off)
-1 Below low temperature alert limit
0 Normal operating temperature
1 Above upper temperature alert limit
2 Above uppermost temperature limit (causes immediate switch-off)
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Factory Default AT Command values
Table 10.15: AT Command Factory Defaults
Configuration Commands
ATQ
ATV
<n>=0
<value>=1
ATX
AT\V
AT+CFUN
AT+CMEE
<value>=4
<value>=1
<fun>=1
<errMode>=0
AT+CSCS
AT^SM20
<chset>="GSM"
<CallMode>=1, <CmgwMode>=1
Status Control Commands
AT+CMER <mode>=0, <keyp>=0, <disp>=0, <ind>=0, <bfr>=0
AT+CIND
ATS18
<mode>=1
<n>=0
Serial Interface Control Commands
AT\Q <n>=0
AT&C
AT&D
AT&S
ATE
<value>=1
<value>=2
<value>=0
<value>=1
AT+ILRR
AT^STPB
<value>=0
<n>=0
Call related Commands
ATS0 <n>=000
ATS6
ATS7
ATS8
ATS10
AT+CBST
AT+CRLP
AT^SLCC
AT+CR
<n>=000
<n>=060
<n>=0
<n>=002
<speed>=7, <name>=0, <ce>=1
<iws>=61,<mws>=61,<T1>=78,<N2>=6
<n>=0
<mode>=0
AT+CRC <mode>=0
Network Service Commands
AT+COPS
AT+CREG
<format>=0
<n>=0
AT^SALS
GPRS Commands
<view>=0, <line>=1
AT+CGAUTO
AT+CGSMS
AT^SGAUTH
ATS0
<n>=3
<service>=3
<auth>=3
<n>=000
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Short Message Service (SMS) Commands
AT+CMGF <mode>=0
AT+CNMI
AT+CSDH
<mode>=0, <mt>=0, <bm>=0, <ds>=0, <bfr>=1
<show>=0
AT+CSMP
AT+CSMS
<fo>=17, <vp>=167, <dcs>=0, <pid>=0
<service>=0
AT^SMGO <n>=0
AT^SSCONF <ra>=0
AT^SSDA <da>=0
AT^SSMSS <seq>=0
SIM related Commands
AT^SCKS <mode>=0
AT^SSET <n>=0
Hardware related Commands
AT^SCTM
AT^SSPI
<n>=0
<connectionState>=0, <delayOne>=0, <delayTwo>=0
Miscellaneous Commands
ATS3 <n>=013 Command Line termination character
ATS4
ATS5
<n>=010 Response Formatting character
<n>=008 Command Line Editing character
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S E C T I O N 1 1 S
P
E C I
F
I C A
T
I
O
N
S
Product specifications are subject to change without notice.
General Specifications
Interface Connectors:
Universal Socket Connectivity
LED Indicators:
Power & DCD
Primary Antenna: MMCX, female, 50 ohms
Antenna Interface:
Size:
Weight:
Power Input:
Maximum TX Power:
3.150 x 1.375 x 0.527 in.
0.8 oz.
5VDC ±0.25VDC; 400 mA (TX average), 1400 mA (TX burst)
GSM/GPRS: +33 dBm min. / +30 dBm min (1900MHz)
Rx Sensitivity:
Frequencies:
Temperature:
GSM/GPRS: -108 dBm typical, -102 dBm min.
Cellular: TX: 824-849 MHz Rx: 869-894 MHz
PCS: TX: 1850-1910 MHz Rx: 1930-1990 MHz
Operating: -30°C to +65°C 100% Duty Cycle
Storage: -40°C to +85°C
Operating Humidity
Transport Protocols:
0 – 85% non-condensing
Serial UART data rates from 300 bps to 230.4 kbps
Command Protocol:
Cinterion TC63i AT Command set
Certifications:
FCC ID: QIPTC63I
Industry Canada ID: 7830A-TC63I
PTCRB Approved
NOTE:
Power consumption while transmitting is dependent on the TX power level of the cellular module. The TX power level of the module is controlled by the cellular base station.
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Data Transmission Specifications
Internet Services
TCP, UDP, HTTP, FTP, SMTP, POP3
GPRS Data Transmission
GPRS Class 12
Mobile Station Class B
PBCCH support
Coding scheme CS 1-4
CSD Data Transmission
Up to 14.4 kbps
V.110
Non-transparent mode
USSD support
Specifications for SMS
Point-to-point MO and MT
SMS cell broadcast
Text and PDU mode
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Mechanical Specifications
The following section describes in detail the exterior dimensions of the SMC-GPRS. All of the drawings below are the approximate actual size. The drawings may be used as layout reference, but it is advised that a physical comparison be made to the modem before proceeding with the mounting process.
All dimensions in inches.
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S E C T I O N 1 2 S
E
R V I C E A
N
D S U P P O
R
T
Product Warranty, RMA and Contact Information
CalAmp guarantees that every SMC-GPRS Cellular Modem will be free from physical defects in material and workmanship for one (1) year from the date of purchase when used within the limits set forth in the Specifications section of this manual.
The manufacturer's warranty statement is available in Appendix 1. If the product proves defective during the warranty period, contact CalAmp Customer Service to obtain a Return
Material Authorization (RMA).
RMA Request
Contact Customer Service:
CalAmp
299 Johnson Avenue, Ste.110
Waseca, MN 56093
Tel: 507-833-8819 ext. 6707
Fax: 507-833-6748
BE SURE TO HAVE THE EQUIPMENT MODEL AND SERIAL NUMBER, AND BILLING AND
SHIPPING ADDRESSES ON HAND WHEN CALLING.
When returning a product, mark the RMA clearly on the outside of the package. Include a complete description of the problem and the name and telephone number of a contact person. RETURN REQUESTS WILL NOT BE PROCESSED WITHOUT THIS INFORMATION.
For units in warranty, customers are responsible for shipping charges to CalAmp Wireless
DataCom. For units returned out of warranty, customers are responsible for all shipping charges. Return shipping instructions are the responsibility of the customer.
Product Documentation
CalAmp reserves the right to update its products, software, or documentation without obligation to notify any individual or entity. Product updates may result in differences between the information provided in this manual and the product shipped. For the most current product documentation, visit www.calamp.com
for datasheets, programming software and user manuals.
Technical Support
M-F 7:30 AM to 4:30 PM CDT
CalAmp Wireless DataCom
299 Johnson Avenue, Ste.110
Waseca, MN 56093
Tel: 507-833-8819
E-mail: [email protected]
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A P P E N D I X A – P O
W
E R S U P P L Y D E S I G
N
I N F O R M
A
T
I
O
N
Power Supply Issues
Because of its high current consumption during transmission, power supply design for the SMC-GPRS modem should be focused on the transmitting mode (dedicated mode). More information can be found in related document
[3]
.
Power Consumption for GSM/GPRS Cell Module
Due to the maximum RF power levels of approx. 2W the power supply current is modulated with 2A
(approx.) pulses of 0.577ms every 4.6ms. During the receive only time period, current GSM call consumption is lower than 100mA. An example current profile is illustrated in Figure 1. The measured values refer to the GSM 900MHz band at maximum power level with a real 50Ohm load.
Figure 1: Current Peak Example
During a GSM call the module transmits in one timeslot, receives in one or two timeslots and is idle for 5-6 timeslots. In all it transmits for 577μs and is idle or receiving for 4.03ms.
Taking worst case figures into account, this adds up to an average current consumption of about
500mA for 1Tx timeslot at GSM.
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Power Losses and Voltage Drops for GSM/GPRS Cell Module
The cell modules are specified to operate with specific voltage supplies. Voltage supplies may range from 3.2V to 4.5V as measured on the module‘s power connector.
To be on the safe side, it should be assumed that the voltage drop during the TX burst does not exceed 400mV. This means that if the cell module requires a minimum voltage supply of 3.2V, the power supply solution should provide at least 3.6V to the cell module.
The SMC-GPRS modem has a built in 3A linear supply which regulates the 5VDC input down to
3.9VDC for the cell module.
SMC-GPRS Power Supply Requirements
The SMC-GPRS modem is designed with a 3A linear supply with two 100uF capacitors on the output.
The 5VDC input voltage level should not dip below 4.6VDC during TX bursts to ensure proper regulation for the 3.9VDC supplied to the cell module and for the serial port buffer IC (supplied by the 5VDC input line).
Figure 2 shows an example of a 5VDC source supply dipping to 4.72VDC during these TX burst cycles. The 3.9VDC regulated line to the cell module stays relatively constant.
Figure 2: Voltage drop during TX bursts
The regulator on the SMC-GPRS modem will provide a post filtering effect, lowering external supply ripple to the cell module. The current draw on the 5VDC external supply during these TX burst cycles can be 1.4 Amps.
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SMC-GPRS Power Supply Considerations
Ideally, the external 5VDC supply should be able to provide the 1.4A current required by the SMC-
GPRS modem when the TX bursts occur. When this is not a practical design alternative, a mix between a linear regulator and capacitor supply may be an alternative approach. Figure 3 shows the basic block diagram.
External Regulator
SMC-GPRS
Vin Vout 5VDC
GND
C
GND
Figure 3: Regulator/Capacitor Block Diagram
In a mixed power supply solution there are two components that can supply the current for the module if operated in parallel. These components are usually a big capacitor and a power supply circuit. With this solution power is supplied from both the capacitor and the external regulator.
C = ( Icap x dT ) / dU
Icap Amps, current required by capacitor dU Volts, voltage change across capacitor dT 577μs, discharge time (TX burst timing)
Ipeak = Isupply + Icap (1.4A TX burst current)
For example, if the regulator supply is designed to provide 500mA to cover the average power needs of the SMC-GPRS modem, the capacitor will need to supply the 900mA needed during TX bursts.
Assuming a 400mV change across the capacitor we have;
C = (0.9A x 577μs) / 0.4V
C = 1298μF
The table below shows the required capacitor values for different capacitor current requirements using the same voltage drop across the capacitor.
Isupply,
Amps
Icap,
Amps
C, μF
0.5
0.6
0.7
0.8
0.9
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1298
1154
1010
866
721
577
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A P P E N D I X B – C R E A T I N G A D I A L U P N E T W O R K I N G C O N N
E
C T I
O
N
Windows XP
Add Standard Windows Modem
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Configuring the Modem
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Create a Dial-Up Networking (DUN) Connection
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A P P E N D I X C – W A R R A N T Y S T A T E M E N T
CalAmp warrants to the original purchaser for use ("Buyer") that data telemetry products manufactured by DRL ("Products") are free from defects in material and workmanship and will conform to DRL's published technical specifications for a period of, except as noted below, one (1) year from the date of shipment to Buyer. DRL makes no warranty with respect to any equipment not manufactured by DRL, and any such equipment shall carry the original equipment manufacturer's warranty only. DRL further makes no warranty as to and specifically disclaims liability for, availability, range, coverage, grade of service or operation of the repeater system provided by the carrier or repeater operator. Any return shipping charges for third party equipment to their respective repair facilities are chargeable and will be passed on to the Buyer.
If any Product fails to meet the warranty set forth above during the applicable warranty period and is returned to a location designated by DRL. DRL, at its option, shall either repair or replace such defective Product, directly or through an authorized service agent, within thirty (30) days of receipt of same. No Products may be returned without prior authorization from DRL. Any repaired or replaced Products shall be warranted for the remainder of the original warranty period. Buyer shall pay all shipping charges, handling charges, fees and duties for returning defective Products to DRL or DRL's authorized service agent. DRL will pay the return shipping charges if the Product is repaired or replaced under warranty, exclusive of fees and duties. Repair or replacement of defective
Products as set forth in this paragraph fulfills any and all warranty obligations on the part of DRL.
This warranty is void and DRL shall not be obligated to replace or repair any Products if (i) the
Product has been used in other than its normal and customary manner; (ii) the Product has been subject to misuse, accident, neglect or damage or has been used other than with DRL approved accessories and equipment; (iii) unauthorized alteration or repairs have been made or unapproved parts have been used in or with the Product; or (iv) Buyer failed to notify DRL or DRL's authorized service agent of the defect during the applicable warranty period. DRL is the final arbiter of such claims.
THE AFORESAID WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED AND
IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. DRL AND BUYER AGREE THAT BUYER'S EXCLUSIVE REMEDY
FOR ANY BREACH OF ANY OF SAID WARRANTIES IT AS SET FORTH ABOVE. BUYER AGREES THAT IN
NO EVENT SHALL DRL BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, SPECIAL, INDIRECT OR
EXEMPLARY DAMAGES WHETHER ON THE BASIS OF NEGLIGENCE, STRICT LIABILITY OR
OTHERWISE. The purpose of the exclusive remedies set forth above shall be to provide Buyer with repair or replacement of non-complying Products in the manner provided above. These exclusive remedies shall not be deemed to have failed of their essential purpose so long as DRL is willing and able to repair or replace non-complying Products in the manner set forth above.
This warranty applies to all Products sold worldwide. Some states do not allow limitations on implied warranties so the above limitations may not be applicable. You may also have other rights, which vary from state to state.
EXCEPTIONS
ONE YEAR: Labor to replace defective parts in repeaters or base stations
THIRTY DAY: Tuning and adjustment of telemetry radios
NO WARRANTY: Fuses, lamps and other expendable parts
Effective 1/2008
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