Siemens TC35 Specifications

TC35i

Siemens Cellular Engine

Migration from TC35 to

TC35i

Version: V 01.01

DocID: TC35_TC35i_MIG_01_V01.01

Status:

Preliminary

TC35i: Migration from TC35 to TC35i

P R E L I M I N A R Y

Document Name:

Migration from TC35 to TC35i

Version:

Date:

DocId:

Status:

V01.01

January, 29, 2003

TC35_TC35i_MIG_01_V01.01

Preliminary

General notes

Product is deemed accepted by Recipient and is provided without interface to Recipient's products. The

Product constitutes pre-release version and code and may be changed substantially before commercial release. The Product is provided on an “as is” basis only and may contain deficiencies or inadequacies.

The Product is provided without warranty of any kind, express or implied. To the maximum extent permitted by applicable law, Siemens further disclaims all warranties, including without limitation any implied warranties of merchantability, fitness for a particular purpose and non-infringement of third-party rights. The entire risk arising out of the use or performance of the Product and documentation remains with Recipient. This Product is not intended for use in life support appliances, devices or systems where a malfunction of the product can reasonably be expected to result in personal injury. Applications incorporating the described product must be designed to be in accordance with the technical specifications provided in these guidelines. Failure to comply with any of the required procedures can result in malfunctions or serious discrepancies in results. Furthermore, all safety instructions regarding the use of mobile technical systems, including GSM products, which also apply to cellular phones must be followed. Siemens AG customers using or selling this product for use in any applications do so at their own risk and agree to fully indemnify Siemens for any damages resulting from illegal use or resale

.To the maximum extent permitted by applicable law, in no event shall Siemens or its suppliers be liable for any consequential, incidental, direct, indirect, punitive or other damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information or data, or other pecuniary loss) arising out the use of or inability to use the Product, even if

Siemens has been advised of the possibility of such damages.

Subject to change without notice at any time.

Copyright notice

Copying of this document and giving it to others and the use or communication of the contents thereof, are forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved in the event of grant of a patent or the registration of a utility model or design.

Copyright © Siemens AG 2003

Trademark notice

MS Windows



is a registered trademark of Microsoft Corporation.

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Contents

1 Revision history .............................................................................................................. 5

2

3

4

5

General info .................................................................................................................... 6

2.1

How to use this document ....................................................................................... 6

Feature migration ........................................................................................................... 7

3.1

General description ................................................................................................. 7

3.2

Certification and standards ..................................................................................... 8

Hardware migration ........................................................................................................ 9

4.1

Introduction .............................................................................................................. 9

4.2

Operating Modes ................................................................................................... 10

4.3

Interface/connectors comparison TC35i/TC35 ..................................................... 11

4.4

Power Supply ........................................................................................................ 12

4.4.1

General ...................................................................................................... 12

4.4.2

Power up / down scenarios ....................................................................... 13

4.4.3

Automatic shutdown .................................................................................. 13

4.4.3.1

Temperature dependent shutdown ......................................................... 13

4.4.4

Battery pack ............................................................................................... 14

4.5

RTC backup .......................................................................................................... 15

4.6

Control signals ....................................................................................................... 15

4.7

Interfaces ............................................................................................................... 16

4.7.1

Serial Interface ........................................................................................... 16

4.7.2

SIM card interface ...................................................................................... 16

4.7.3

Antenna Interface ....................................................................................... 17

4.7.3.1

General .................................................................................................... 17

4.7.4

Audio Interface ........................................................................................... 17

4.8

Electrostatic discharge .......................................................................................... 18

4.9

Mechanical Dimensions ........................................................................................ 18

4.10 Mounting and installation ....................................................................................... 19

4.11 Terms and Abbreviations ...................................................................................... 20

AT-Commands migration ............................................................................................. 22

5.1

General comments ................................................................................................ 22

5.2

List of jointly supported AT-commands ................................................................. 23

5.2.1

Standard V.25ter AT Commands .............................................................. 23

5.2.2

AT Commands for FAX ............................................................................. 24

5.2.3

AT Commands originating from GSM 07.07

............................................. 25

5.2.4

AT commands originating from GSM 07.05 for SMS ................................ 27

5.2.5

Siemens defined AT commands for enhanced functions ......................... 31

5.3

List of new AT-Commands ................................................................................... 32

5.3.1

AT Commands for SIM Application Toolkit (GSM 11.14) .......................... 32

5.3.2

AT Commands originating from GSM 07.07

............................................. 32

5.3.3

Commands from change requests TC/AC/MC35 .................................... 33

5.3.4

New features for TC35i only – misc.

......................................................... 33

5.3.5

Siemens defined AT commands for enhanced functions ......................... 33

5.4

List of unsupported AT-Commands ...................................................................... 33

5.5

List of AT-Commands for V.25ter compatibility .................................................... 33

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Figures

Figure 1: RTC supply from capacitor for TC35i ................................................................................. 15

Figure 2: RTC supply from capacitor for TC35.................................................................................. 15

Figure 3: TC35 footprint ................................................................................................................. 18

Figure 4: TC35i footprint ................................................................................................................ 18

Tables

Table 3-1: General description a)...................................................................................................... 7

Table 3-2: General description b)...................................................................................................... 8

Table 4-1: Operating modes ........................................................................................................... 10

Table 4-2: Host interface PIN assignment - ZIF connector................................................................. 11

Table 4-3: Power supply signals..................................................................................................... 12

Table 4-4: Power consumption comparison ..................................................................................... 12

Table 4-5: Maximum ratings and the associated URCs..................................................................... 13

Table 4-6: Wake up from SLEEP mode scenarios............................................................................ 14

Table 4-7: Battery specifications - general....................................................................................... 14

Table 4-8: Battery specifications - charging ..................................................................................... 14

Table 4-9: RS232 – Serial interface................................................................................................. 16

Table 4-10: RF interface ................................................................................................................ 17

Table 4-13: Glossary of terms ........................................................................................................ 20

Table 5-1: Standard V.25ter AT commands ..................................................................................... 23

Table 5-2: AT commands for FAX................................................................................................... 24

Table 5-3: AT commands from GSM 07.07...................................................................................... 25

Table 5-4: AT commands for SMS.................................................................................................. 27

Table 5-5: Siemens defined AT commands...................................................................................... 31

Table 5-6: AT commands for SAT................................................................................................... 32

Table 5-7: AT commands from GSM 07.07- new .............................................................................. 32

Table 5-8: AT commands from change requests .............................................................................. 33

Table 5-9: New TC35i features........................................................................................................ 33

Table 5-10: New Siemens defined AT commands............................................................................. 33

Table 5-11: V.254ter compatibility commands ................................................................................. 33

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1 Revision history

Date

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021023

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021108

021108

021111

021111

LR

NK

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AM

021112 AM/NK/LR

021112 NK/LR

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021112

NK

LR

021114

021121

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021219

090103

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Author Version

LR

LR

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AM/LR

00.01

Change

Initial version based on M20T to TC35T migration paper and "Daphne" HW specification 00/011.

00.02

Chapter # 5: AT commands - analysis and breakdown per module

00.02

Initial version revision, AT Commands analysis

00.03

Chapters # 3.1 – 4: HW

00.03

Chapters # 3.1 – 4: HW – revision, Chapter # 2.1: How to use this document - revision

00.03

Chapter # 5: AT-Commands migration – revision, Chapters # 2.1, 5.1,

5.2.1

00.03

Chapters # 4: HW

00.03

Chapter # 5.6: AT-Commands reference documents – new, Chapters #

5.2.2, 5.2.3

00.03

Chapters # 4: HW

00.03

Chapter # 5.2.4: AT commands originating from GSM 07.05 for SMS

00.03

Chapters # 4: HW

00.03

Chapter # 5.2.5: Siemens defined AT commands for enhanced functions

00.03

Chapters # 3.1 – 4: HW

00.03

Chapters # 5.3, 5.4, 5.5, 5.6

00.03

Chapter # 3: Feature migration

00.04

Chapter # 4: Hardware migration [all sub chapters] - revision

00.04

Chapters [all]: Integration of HW & SW part, additional formatting and corrections

00.05

Chapters [all]: Additional formatting and corrections

00.05

Chapter #4: HW - revision, additional content

00.05

Chapters [all]: Final formatting and corrections

00.05

Chapters [all]: revision

00.05

Chapters [all]: revision via telephone conference

00.06

Chapters [all]: corrections

00.06

Chapters #: 4.6.3, 4.6.3.1, 4.7, 4.10

00.06

Revision and corrections - latest info from TC35i_HD_01_V00.01 included

00.07

Additional formatting and corrections

00.08

Corrections, new "general notes" chapter

00.09

Reducing the document to get a shorter version; additional formatting and corrections trough the hole document

00.09

Reducing the document to get a shorter version; additional formatting and corrections trough the hole document

00.10

Revision, phone conference

01.00

Released

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2 General info

2.1 How to use this document

The target audiences for this document are all categories of software and hardware developers, system integrators and expert end-users of SIEMENS GSM wireless modules.

The content applies in particular to current users and developers whose applications are utilizing SIEMENS TC35/TC37/TC35T for their communications purposes.

The aim of this document is to provide information and offer support in order to facilitate the transition towards the new generation of SIEMENS wireless modules, namely, TC35i.

Information provided here is based on official technical manuals and released specifications for TC35 and TC35i. The naming conventions used in this document follow those of source documentation.

The authors presume the readers are already familiar with the contents of those manuals.

The document presents migration issues in detail using comparison tables between the modules and covers topics ranging from hardware specifications to AT-command interface.

Technical specifications and interfaces to GSM telecom services are described and compared in detail as well as all the relevant features. AT-command interface was given particular attention since it represents the main tool available to developers through which applications can be controlled. Available commands for both TC35i and TC35T are listed and classified according to their implementation within each of the modules. Differences in test, query and execution syntax as well as in available parameters are noted for each command.

Commands are classified in three main groups: jointly supported commands, commands new with respect to TC35 and TC35 commands not supported by TC35i.

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3 Feature migration

Feature comparison for both modules is introduced in the table below. Only main specifications are listed.

3.1 General description

Table 3-1: General description a)

Features

Product Data

Parameter

Frequency bands:

Audio

SMS

SAT

TC35 TC35i

Dual-band EGSM 900, GSM1800 compliant to GSM Phase 2/2+

Output performance:

GSM Class:

Control:

Supported SIM card:

Class 4 (2W) for EGSM900

Class 1 (1W) for GSM1800 small MS via AT commands

3V

External SIM card holder has to be connected via SIM interface connector

SM, FD, LD, MC, RC, ON, ME not supported supported, via AT%D

Phonebook management:

Automatic dial on DTR line activation:

Input voltage range:

Component mounting:

Dimensions:

Weight:

Temperature conditions:

Real time clock:

Timer function:

Antenna design:

Antenna connectors:

Evaluation kit:

Speech codec:

Audio interface:

General bulk SMS MO enhancement:

SMS storages:

SIM Application Toolkit:

3.3V – 5.5V

3.3 – 4.8 V both sides

Automatic shutdown supported single-side mounted

54.5 x 36 x 6.85 mm

18g

54,5 x 36 x 3,6

10g

Normal operation: (-20°C; +55°C)

Restricted operation: (-29°C; -25°C) & (+55°C; +70°C)

Storage: (-40°C; +85°C)

Automatic shutdown supported: (>+75°C and <-29°C)

Pin 30, VDDLP

Implemented

Pin 30, VDDLP

Needs an external serial resistor between VDDLP and capacitor / battery to limit input current.

Includes 1k Ω resistor on VDDLP line between ZIF connector and PSU.

No external resistor required.

If application is battery powered, additional diode(s) are suggested between VDDLP and VBATT+ (see

Chapter "RTC backup" in your

"TC3x Hardware Interface

Description").

If used in earlier TC35 application, removing additional diode(s) between

VDDLP and VBATT+ line is required.

Programmable via AT command

50 Ω antenna interface.

GSC coaxial connector

DSB 35 Support Box

Half Rate (ETS 06.20)

Full Rate (ETS 06.10)

Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)

2 x analogue audio interfaces (hands-free, supports echo cancellation)

Point-to-point MT and MO SMS

SMS Cell Broadcast

Text and PDU mode SMS MO

+CMMS

SM

-

SM+ME (25 places)

SAT class 3, GSM 11.14 Release 98

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Table 3-2: General description b)

Data

Fax

Features

External interfaces

Serial interface

Software update

Parameter TC35 TC35i

Supported services: 2400 bps (V.22bis)

4800 bps (V.32)

9600 bps (V.32)

14400 bps (V.34)

2400 bps (V.110)

4800 bps (V.110)

9600 bps (V.110)

14400 bps (V.110) supported non-transparent mode

USSD support:

Connection element:

Supported classes:

RF interface:

Application interface:

Baud rate: Fixed range

(300bps...115kbps)

Autobauding

(1.2kbps...115kbps)

Local character framing: 8N1 - fixed

Group 3: Class 1, Class 2

GSC antenna connector only

40-pin ZIF connector

Fixed range (300bps...230kbps)

Autobauding (1.2kbps...230kbps)

7E1, 7O1, 8E1, 8N1, 8O1, 7E2, 7O2,

8E2, 8N2, 8O2; via AT command

Multiplex mode:

Flow control: supported, MUX GSM 07.10

RTS/CTS hardware handshake and software XON/XOFF flow control.

via RS232 or SIM interface

3.2 Certification and standards

Both TC35 and TC35i comply to the same directives and standards. For further information, please consult the HW manual.

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4 Hardware migration

This chapter contains information regarding the hardware set-up, installation instructions and physical properties for both modules. Hardware features are listed in comparison tables related to power supply, RF, audio, SIM and RS232 serial interfaces with functionality descriptions. All features, except RF, are available through common host application interface.

4.1 Introduction

TC35i was intended as a "feature-superset" successor to TC35. It is super-slim, single-side mounted, compact, dual-band GSM OEM module for integration into industrial or mobile devices.

TC35i incorporates all the TC35 HW features with following additional features:

æ Automatic dial on DTR line activation

æ Autobauding up to 230kbps. Character framing and flow control fully supported

æ Single side mounted

æ SM+ME (25 places)

æ SAT class 3, GSM 11.14

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4.2 Operating Modes

Various operating modes for TC35 and TC35i modules are listed in the table below. TC35i module supports four additional sleep modes compared to TC35. For further details please consult the TC35i manual

The table below shows operating modes overview for both devices

Table 4-1: Operating modes

Mode Function

GSM SLEEP

Normal operation

POWER DOWN

Alarm mode

Charge-only mode

Charge mode during normal operation

GSM IDLE

GSM TALK

TC35 TC35i

Power saving mode set with AT+CFUN command. Software is active to minimum extent. If the GSM engine was registered to the GSM network in IDLE mode, it is registered and paging in

SLEEP mode, too. AT interface is not responding.

Software is active to a minimum extent. If the module was registered to a GSM network in

IDLE mode, it remains, in SLEEP mode, registered and pageable from the BTS.

Power saving can be chosen at different levels.

The NON_CYCLIC SLEEP mode (AT+CFUN=0) disables the AT interface. The CYCLIC SLEEP

mode AT+CFUN=5, 6, 7 and 8 alternatingly activate and deactivate the AT interface to allow permanent access to all AT commands.

Software is active. Once registered to the GSM network, paging with BTS is carried out.

The module is ready to send and receive.

Connection between two subscribers is in progress. Power consumption depends on network coverage individual settings, such as DTX off/on, FR/EFR/HR, hopping sequences, antenna.

Operating voltage is applied. Only a voltage regulator in the Power Supply ASIC is active for powering the RTC. Software is not active. The RS-232 interface is not accessible.

Restricted operation launched by RTC alert function while the module is in Power Down mode. Module will not be registered to GSM network. Limited number of AT commands is accessible. If application is battery powered: No charging functionality in Alarm mode.

Limited operation for battery powered applications. Enables charging while engine is detached from GSM network. Limited number of AT commands is accessible. There are several ways to launch Charge-only mode:

æ From Power Down mode: Connect charger to POWER lines when engine was powered down by AT^SMSO.

æ From Normal mode: Connect charger to POWER lines, then enter AT^SMSO.

Normal operation (SLEEP, IDLE, TALK, DATA) and charging running in parallel. Charge mode changes to Charge-only mode when the module is powered down before charging has been completed.

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4.3 Interface/connectors comparison TC35i/TC35

TC35 and TC35i are equipped with a 40-pin 0.5mm pitch ZIF connector that connects to the cellular application platform. The mentioned ZIF connector is completely the same for both devices. The host interface incorporates several sub-interfaces described in the following chapters

TC35 and TC35i are totally PIN compatible. Some off the TC35 signal names were changed with TC35i but the functionality is completely identical.

Table 4-2: Host interface PIN assignment - ZIF connector

Pin No.

38

39

40

34

35

36

37

30

31

32

33

26

27

28

29

22

23

24

25

18

19

20

21

14

15

16

17

1-5

6-10

11-12

13

Function

RS232

RS232

RS232

RS232

RS232

RS232

SIM

SIM

Power supply

Ground

Charger

External supply voltage

Battery Temperature

Ignition

RS232

RS232

Audio

Audio

Audio

Audio

Audio

Audio

Audio

SIM

SIM

SIM

SIM

RTC Backup

Power Down

Synchronization

Audio

IO

I

I

I

O

O

O

I

O

I

O

O

IO

O

O

Ground

I

0

I

O

O

I

O

I

I

I

O

O

I

O

I

Ground

CCIO

CCCLK

CCVCC

CCGND

VDDLP

/PD

SYNC

EPP2

EPN2

EPP1

EPN1

MICP1

MICN1

MICP2

MICN2

RxD0

TxD0

CTS0

RTS0

DTR0

DCD0

CCIN

CCRST

VBATT+

GND

POWER

VDD

AKKU_TEMP

/IGT

DSR0

/RING

TC35

Signal Name

CCIO

CCCLK

CCVCC

CCGND

VDDLP

EMERGOFF

SYNC

EPP2

EPN2

EPP1

EPN1

MICP1

MICN1

MICP2

MICN2

RxD0

TxD0

CTS0

RTS0

DTR0

DCD0

CCIN

CCRST

BATT+

GND

POWER

VDD

BATT_TEMP

IGT

DSR0

RING0

TC35i

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4.4 Power Supply

4.4.1 General

TC35 and TC35i need to connect the power supply to the ZIF connector (5 pins each V

BATT+ and GND). Power supply has to be a single voltage source at BATT+.

Power Supply ASIC handles all the key functions for supplying power.

The following tables show an overview of main power supply points with TC35 and TC35i

Table 4-3: Power supply signals

Feature

Input voltage range:

Ignition:

Emergency shutdown:

(Watchdog)

General

TC35

Five pins of BATT+ and GND must be switched in parallel for supply purposes because peaks of up to 2A may occur.

V

I

= 3.3V to 5.5V

V

I,typ

I nom

= 4.2V

˜ 2A, in burst

V

R out out

V low,max t low

= 2.3V

≈ 220k.

≈

= 0.45V @ Iout = 10µA

100ms

Signal: falling edge and hold for t low

Open drain/collector driver is required to pull down this pin to power on the GSM

Engine.

ON

TC35i

Five pins of BATT+ and GND must be switched in parallel for supply purposes because peaks of up to 3A may occur.

V

I

= 3.3V to 4.8V

V

I,typ

I nom

= 4.2V

˜ 2A, in burst

R

I

V

˜ 100k Ω , C

IL max

I

˜ 1nF

= 0.5V @ I max

= 20µA t

V

Open max low

= 2.3V

≈ 100ms

Signal: falling edge and hold for t low

~~~ |____| ~~~ Active Low ≥ 100ms

Via /PD (pin no. 31)

This line must be driven by an Open Drain or Open Collector driver.

Emergency shutdown deactivates the modules power supply.

via EMERGOFF (pin no. 31)

This line must be driven by an Open Drain or

Open Collector driver.

Emergency shutdown deactivates the modules power supply.

Synchronization:

Indication of increased current consumption during uplink transmission burst

Power saving:

Signal ~~~

3.5s

|______| ~~~ Active Low ≥

V

V out,low,max

= 0.2V @ I= 0.1mA

out,high,min

V out,high,max

= 2.25V @ I=-0.1mA

= 2.76V

Supported trough AT+CFUN

Functionality levels <fun>=0

Signal ~~~ |______| ~~~ Active Low ≥ 3.2s

V

OLmax

V

OHmin

V

OHmax

= 0.3V @ I = 0.1mA

= 2.25V @ I = -0.1mA

= 2.73V

Supported trough AT+CFUN

Functionality levels <fun>=0, 5 , 6, 7 and

8

Table 4-4: Power consumption comparison

Device

TC35

TC35i

Stand-by

50 µ A typ

50 µ A typ

Sleep

Power consumption

Idle

3mA typ

3mA typ

10mA typ

25mA

Talk mode at

EGSM900/1800

300mA/270mA

300-400mA

Talk mode (peak) at

EGSM900/1800

1.8A typ

2A typ

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4.4.2 Power up / down scenarios

TC35 and TC35i are fully identical regarding the power up/down scenario with the following exception:

To actually turn off the TC35i, the emergency shutdown line has to be driven to ground for

≥

3.2s. The TC35 emergency shutdown line needs to be driven to ground for

≥

3.5s

For further information please consult the HW manual for TC35 and TC35i.

4.4.3 Automatic shutdown

To ensure proper operation of all assemblies under varying conditions, such as temperature, input voltage, transmission power etc., TC35 and TC35i features protection elements for automatic shutdown.

Automatic shutdown takes effect if:

• the TC35/TC35i board is exceeding the critical limits of overtemperature or undertemperature

• the battery is exceeding the critical limits of overtemperature or undertemperature in a battery application, undervoltage is detected

• overvoltage is detected.

4.4.3.1 Temperature dependent shutdown

The board temperature is constantly monitored by an internal NTC resistor located on the

PCB. The NTC that detects the battery temperature must be part of the battery pack circuit as described in the manual. The values detected by NTC resistor are measured directly on the board and the battery and are therefore, not fully identical with the ambient temperature.

Table 4-5: Maximum ratings and the associated URCs

Sending temperature alert

TC35 TC35i

^SCTM_A: 1

^SCTM_B: 1

^SCTM_A: -1

^SCTM_B: -1

^SCTM_A: 0

^SCTM_B: 0

^SCTM_A: -2

Caution: T amb

of battery between +56°C and +60°C.

Caution: T amb

of board between +55°C and +75°C.

Caution: T amb

+75°C.

of board between +65°C and

Caution: T amb

of battery between -14°C and -18°C.

Caution: T amb

of board between –20°C and –25°C.

Caution: T amb

29°C.

of board between –25°C and –

Battery back to uncritical temperature range

Board back to uncritical temperature range.

Automatic shutdown (URC appears no matter whether or not presentation was enabled)

^SCTM_A: 2 Alert: T amb

of battery >60°C. TC35 switches off immediately.

^SCTM_B: 2 Alert: T amb

of board >70°C. TC35 switches off immediately.

Alert: T amb

of battery < -18°C. TC35 switches off immediately

Alert: T amb

of board >75°C. TC35i switches off immediately.

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^SCTM_B: -2 Alert: T amb

of board <-25°C. TC35i switches off immediately.

Alert: T amb

of board <-29°C. TC35i switches off immediately.

The table below shows which conditions will wake up TC35 and TC35i from sleep mode

As it can be seen from the following table TC35i supports four sleep modes (5,6,7,8) more then TC35.

Table 4-6: Wake up from SLEEP mode scenarios

Event

Ignition line

/RTS0 or /RTS1 (falling edge)

Unsolicited Result Code (URC)

Incoming voice or data call

Any AT command (incl. outgoing voice or data call, outgoing SMS)

Incoming SMS depending on mode selected by AT+CNMI:

AT+CNMI=0,0

(= default, no indication of received SMS)

AT+CNMI=1,1

(= displays URC upon receipt of SMS)

AT+CFUN=0 ⇒

AT+CFUN=1

TC35

No

Yes

Yes

Yes

No

TC35i

Not Possible

(UART disabled)

AT+CFUN=5 or 6 ⇒

AT+CFUN=1

TC35i only - (TC35 does not support sleep modes: 5-8)*

TC35i

No

No

Yes

Yes

No

No

AT+CFUN=7 or 8 ⇒

AT+CFUN=1

No

No

No

No

No

No

Yes Yes No

RTC alarm

AT+CFUN=1

Yes

Not Possible

(UART disabled)

Yes

Yes

No

Yes

* TC35i supports SLEEP modes 0, 5, 6, 7 and 8. Different events or commands cause a wake-up from a SLEEP mode. The detailed descriptions of these modes can be found in respective HID documents.

4.4.4 Battery pack

For some applications the use of a battery pack may be required. TC35 and TC35i can be powered from a Li-Ion battery:

Table 4-7: Battery specifications - general

Supported Charging Technique

Operating modes

Output voltage (for charger)

Charging current

Maximum voltage spikes

General

TC35 TC35i

Trickle charging and processor controlled fast charging

SLEEP, IDLE or TALK/DATA mode

5.5V...8V (under load)

25V and must not exceed 1ms

Limited to 500mA

15V and must not exceed 1ms

Table 4-8: Battery specifications - charging

Module

TC35

TC35i

Battery specification

3.6 V

3.6 V

4.2 V

4.2 V

Maximum charging voltage Capacity

600-800 mAh max 850 mAh

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4.5 RTC backup

The internal Real Time Clock of is supplied from a dedicated voltage regulator in the power supply ASIC which is also active when TC35 and TC35i are in POWER DOWN status. Alarm function is included that allows waking up TC35 and TC35i without logging to the GSM network.

On the TC35i board a serial resistor is placed next to the VDDLP line in order to limit the input current of an empty capacitor. This eliminates the need of adding a resistor as required in applications based on the earlier TC35 module.

On the TC35 board there is no resistor placed on the board and it should be added when designing the GSM application

Baseband processor

RTC

Figure 1: RTC supply from capacitor for TC35i

PSU

1 k

ZIF

BATT+

VDDLP

+

Figure 2: RTC supply from capacitor for TC35

4.6 Control signals

Input and Output control signals are identical with both TC35 and TC35i device.


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4.7 Interfaces

TC35 and TC35i interfaces are compatible. The following chapters shows a detailed comparison values for each interface. For further information please consult the TC35i HW manual

4.7.1 Serial Interface

Each device uses the same serial interface type with identical pin positions.

Compared to TC35 module that supports a fixed local character framing format between TA and TE, the new TC35i device offers various character framing formats specified in the next table. For further information please consult the AT command migration part of the document or the TC35i at command specification.

The table below shows a comparison of values for the serial interface with both devices.

Table 4-9: RS232 – Serial interface

RS232 - Serial interface

Type:

Feature

Signal levels:

Local character framing:

Selectable baud rate

Flow Control

TC35 TC35i

Serial asynchronous transmitter and receiver conforming to ITU-T RS232 Interchange Circuits DCE.

V

V

V out,high,max

V out,low,max out,high,min in,high,min

= 0.2V @ I = 0.1mA

= 2.25V @ I = -0.1mA

= 2.76V

= 1.95V, V i,h,max

=3.3V

fixed to 8 data bits, no parity and 1 stop bit

V

V

V

OLmax

OHmin

OHmax

= 0.3V @ I = 0.1mA

= 2.25V @ I = -0.1mA

V

IHmin

= 2.73V

= 1.95V, V

IHmax

= 3.45V

7E1, 7O1, 8E1, 8N1, 8O1, 7E2, 7O2, 8E2, 8N2,

8O2

Fixed range (300bps...115kbps)

Autobauding (1.2kbps...115kbps)

Fixed range (300bps...230kbps)

Autobauding (1.2kbps…230kbps)

RTS0 / CTS0 and/or software flow control via XON / XOFF.

4.7.2 SIM card interface

There are no changes on the integrated SIM interface with TC35 and TC35i.


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4.7.3 Antenna Interface

4.7.3.1 General

Both devices TC35 and TC35i use a GSC connector to establish the RF connection to the host application. The table below shows a RF interface overview for each device.

Table 4-10: RF interface

Feature

Antenna connector:

Interface type:

Max RF power:

RF

Input sensitivity @ ARP

BER Class II < 2.4%

Min

RF interface - general

TC35

-104 [EGSM900]

-102 [GSM1800]

TC35i

GSC coaxial connector

GSM 900/1800

2W [EGSM900] / 1W [GSM1800]

-102dBm [EGSM900, GSM1800]

4.7.4 Audio Interface

Both TC35 and TC35i comprise two analogue audio interfaces, each with an analogue microphone input and an analogue loudspeaker output (see block diagram below).

To suit several types of equipment, there are several audio modes available which can be selected with the AT^SNFS command. The electrical characteristics of the voiceband part vary with the audio mode. For example, sending and receiving amplification, sidetone paths, noise suppression etc. depend on the selected mode and can be set with AT commands

(except for mode 1).

All analogue microphone inputs and loudspeaker outputs are balanced. A power supply for electret microphones is implemented in both interfaces, too. If not needed, they have to be decoupled with capacitors.

Detailed instructions on using AT commands are presented in the AT Command Manual.

TC35i only: Independently of the audio mode, analogue interfaces 1 or 2 can be selected and configured by AT commands.

Characteristics of audio modes

The electrical characteristics of the voiceband part depend on the current audio mode, set with AT^SNFS command. Voice band characteristics are the same for TC35 and TC35i. For further details please consult the HW manual.

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4.8 Electrostatic discharge

TC35 and TC35i are identical protected against Electrical Discharge. For additional information about ESD please consult the actual specification

4.9 Mechanical Dimensions

TC35 and TC35i provide the same type of connectors and mounting holes on the board. The position of mounting holes is identical as with TC35, as well as the order of external connectors. The outline mechanical dimensions are identical with both devices except the high. TC35i is a single side mounted device that makes it much thinner compared to TC35.

Figure 3: TC35 footprint

Figure 4: TC35i footprint

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4.10 Mounting and installation

Appropriate installation and mounting to the host housing / enclosure is essential for reliable operation of the GSM engine.

TC35i & TC35

The TC35 board provides three mounting holes. To properly mount it to the host device you can use M1.6 or M1.8 screws plus suitable washers. The maximum diameter of the screw head, including the washer, must not exceed 4 mm.

To prevent mechanical damage, be careful not to force, bend or twist the GSM engine. Make sure it is positioned flat against the host device.

Avoid placing the TC35 board tightly to the host device. Instead, it is recommended to set the spacers between the module and the host device. If your design approach does not allow for spacers make sure the host device provides an opening for the RF part.

Avoid exerting any pressure on the shielding covers. Contact springs or other components must not be fastened to the covers. In extreme conditions, you run the risk of short-circuit if the cover was damaged or distorted due to pressure. Furthermore, the covers must not be used to apply any solder joints.

For snap-in concept please be aware that the TC35i PCB is thinner then the TC35

PCB

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4.11 Terms and Abbreviations

Table 4-11: Glossary of terms

PCM

PGC

PLL

PSU

RAM

RF

RI

ROM

Mbps

MMI

MTBF

NTC

OC

OTP

PA(C)

PCB

RTC

Rx

SAW

I/O

ISO

ITU

LDO

LFBGA

Li-Ion

LNA

LO

GMSK

GSC

GSM

HR

HW

IC

IF

IMEI

EGSM

ESD

ESR

ETS

FE

FFC

FR

GAIM

DSB

DSP

DSR

DTR

DTX

EFR

EMC

E-GAIM

A/D

AF

AFC

AGC

AMR

ARP

ASIC

BB

CPU

CR

CTR

DAI

DFC

Analogue-to-Digital Converter

Audio Frequency

Automatic Frequency Control

Automatic Gain Control

Adaptive Multi Rate

Antenna Reference Point

Application Specific Integrated Circuit

Baseband

Central Processing Unit

Change Request

Common Technical Regulation

Digital Audio Interface

Digital Frequency Centering

Development Support Board

Digital Signal Processor

Data Set Ready

Data Terminal Ready

Discontinuous transmission

Enhanced Full Rate

Electro Magnetic Compatibility

Enhanced GSM Analog Interfacing Module

Enhanced GSM

Electrostatic Discharge

Equivalent Serial Resistance

European Telecommunication Standard

Front End

Flat Flexible Cable

Full Rate

GSM Analogue Interface Module

Gaussian Minimum Shift Keying

(Type of antenna connector)

Global Standard for Mobile Communications

Half Rate

Hardware

Integrated Circuit

Intermediate Frequency

International Mobile Equipment Identity

Input/Output

International Standards Organization

International Telecommunications Union

Low Drop Out

Low-Profile Fine-Pitch Ball Grid Array

Lithium-Ion

Low-Noise Amplifier

Local Oscillator

Mbits per second

Man Machine Interface

Mean Time Between Failures

Negative Temperature Coefficient

Offset Compensation

One Time Programmable

Power Amplifier (Control)

Printed Circuit Board

Pulse Code Modulation

Programmable Gain-Controlled Amplifier

Phase Locked Loop

Power Supply Unit

Random Access Memory

Radio Frequency

Ring Indication

Read-Only Memory

Real-Time Clock

Receive direction

Surface Acoustical Wave Filter

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SELV

SIM

SMS

SW

TBR

TBD

TBI

TDD

TDMA

Tx

UART

VCO

VCXO

VSWR

ZIF

Safety Extra Low Voltage

Subscriber Identification Module

Short Message Service

Software

Technical Based Regulation

To Be Defined

To Be Inserted

Time Division Duplex

Time Division Multiple Access

Transmit direction

Universal Asynchronous Receiver Transmitter

Voltage Controlled Oscillator

Voltage Controlled Quartz Oscillator

Voltage Standing Wave Ratio

Zero insertion force (connector)

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5 AT-Commands migration

TC35i was intended as a "feature-superset" successor to TC35.

AT Cellular command structure for TC35i corresponds to that of TC35 with the added improvements and new features.

Available commands for both TC35i and TC35 are listed and classified according to their implementation within each of the modules. The entire command set of TC35 is supported by

TC35i. Differences in test, query and execution syntax as well as in available parameters are noted for each command. Commands are classified in three main groups:

æ jointly supported commands

æ commands new with respect to TC35 and

æ TC35 commands not supported by TC35i

5.1 General comments

TC35i feature highlights

The commands below are either newly introduced or improvements based on the implementations present with other modules, e.g. M20, AC43/45, MC35.

æ AT+ICF, AT+IFC - TC35i re-introduces these commands that were present in M20 but not in

TC35 - character framing and flow control commands:

æ AT%D - Command also previously available in M20 - automatic dialling by DTR toggle was not supported by TC35

æ ATS0 now applies to incoming voice calls as well

æ AT+CMER, AT+CIND: mobile event reporting commands

æ AT^SRTC – incoming SMS ring indication

æ AT+CPBS - Extended ME phonebook up to 250 entries

æ AT&W – user profile extended - new commands added: AT+ICF, AT+IFC, AT\Qn, AT%D

æ AT+CMMS – keeps the data channel open for much faster throughput of SMS-SUBMIT messages

æ AT+CNMA is no longer required for SMS-DELIVER messages delivered directly to TE

æ AT^SSR - issues URCs related to availability of the SIM card

æ AT+CCUG – closed user group now available

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5.2 List of jointly supported AT-commands

AT-commands listed in the tables below are supported by both TC35i and TC35. Command defaults, however, may differ.

NOTE: Many commands are available only after the PIN has been entered. For a full list, please refer to respective AT reference manuals.

5.2.1 Standard V.25ter AT Commands

Table 5-1: Standard V.25ter AT commands

# AT Command

1 A/

2 +++

3 AT\Qn

Repeat previous command line

Switch from data mode to command mode

Flow control

Differing implementation

TC35i

AT\Qn included within user profile. See comments under AT&W.

TC35

-

4 ATA

5 ATD

TC35i

Answer a call

Mobile originated call to dial a number


International calls to be dialled exclusively starting with "+", i.e. "00" at the beginning of a dialling string will not be translated into a "+".

TC35

-

6 ATD><mem><n> Originate call to phone number <n> in memory <mem>

7 ATD><n> Originate call to phone number selected from active memory

8 ATD><str>

9 ATDI

Originate call to phone number in memory with corresponding field

Mobile originated call to dialable ISDN number <n>

10 ATDL

11 ATE

Redial last telephone number used

Enable command echo

Differing parameters

TC35i TC35

MUX: Echo is disabled at the start of MUX mode and is not available on logical channels, ATE1 responds with ERROR

MUX: Echo is available on logical channels and is initially enabled only on main (data) MUX channel.

12 ATH

13 ATI

14 ATI[value]

15 ATL

16 ATM

17 ATO

18 ATQ

19 ATP

20 ATS0

TC35i

Disconnect existing connection

Display product identification information

Display additional identification information

Set monitor speaker loudness

Set monitor speaker mode

Switch from command mode to data mod

Set result code presentation mode

Select pulse dialling

Set number of rings before automatically answering the call


TC35

ATS0 applies to incoming voice calls as well.

ATS0 applies only to incoming data or fax calls.

22 ATS2

23 ATS3

24 ATS4

25 ATS5

26 ATS6

27 ATS7

TC35i

Escape code sequence

Write command line termination character

Set response formatting character

Write command line editing character

Set pause before blind dialling

Set number of seconds to wait for connection completion


TC35

ATS7 applies to voice calls as well.

ATS7 applies only to data calls.

28 ATS8

29 ATS10

30 ATS18

31 ATT

Set number of seconds to wait for comma dial modifier

Set disconnect delay after indicating the absence of data carrier

Extended error report

Select tone dialling

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# AT Command

32 ATV

33 ATX

34 ATZ

35 AT&C

36 AT&D

37 AT&F

38 AT&S

39 AT&V

40 AT&W

TC35i

Set result code format mode

Set CONNECT result code format and call monitoring

Set all current parameters to user defined profile

Set circuit Data Carrier Detect (DCD) function mode

Set circuit Data Terminal Ready (DTR) function mode

Set all current parameters to manufacturer defaults

Set circuit Data Set Ready (DSR) function mode

Display current configuration

Store current configuration to user defined profile


TC35

User profile extended to include the following commands:

AT\V, AT+ICF, AT+IFC, AT\Q, AT%D, AT^STPB.

Commands: AT\V, AT+ICF, AT+IFC, AT\Q, AT%D are either not available or not included within user profile.

41 AT+GCAP

42 AT+GMI

43 AT+GMM

44 AT+GMR

45 AT+GSN

46 AT+ILRR

Request complete TA capabilities list

Request manufacturer identification

Request TA model identification

Request TA revision identification of software status

Request TA serial number identification (IMEI)

Set TE-TA local rate reporting

47 AT+IPR Set fixed local rate

Differing parameters (factory defaults); minor wording differences

TC35i TC35

<rate>

Factory settings, fixed: AT+IPR=57600

(230,4kbps possible in case of available memory)

<rate>

Factory settings, autobauding: AT+IPR=0

5.2.2 AT Commands for FAX

Table 5-2: AT commands for FAX

# AT

48 AT+FBADLIN

49 AT+FBADMUL

50 AT+FBOR

51 AT+FCIG

52 AT+FCLASS

53 AT+FCQ

54 AT+FCR

55 AT+FDCC

Bad Line Threshold

Error Threshold Multiplier

Query data bit order

Query or set the Local polling id

Fax: Select, read or test service class

Copy Quality Checking

Capability to receive

Query or set capabilities

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# AT

56 AT+FDFFC

57 AT+FDIS

58 AT+FDR

59 AT+FDT

60 AT+FET

61 AT+FK

62 AT+FLID

63 AT+FMDL

64 AT+FMFR

65 AT+FOPT

66 AT+FPHCTO

67 AT+FREV

68 AT+FRH

69 AT+FRM

70 AT+FRS

71 AT+FTH

72 AT+FTM

73 AT+FTS

74 AT+FVRFC

Data Compression Format Conversion

Query or set session parameter

Begin or continue phase C data reception

Data Transmission

End a page or document

Kill operation, orderly FAX abort

Query or set the Local Id setting capabilities

Identify Product Mode

Request Manufacturer Identification

Set bit order independently

DTE Phase C Response Timeout

Identify Product Revision

Receive Data Using HDLC Framing

Receive Data

Receive Silence

Transmit Data Using HDLC Framing

Transmit Data

Stop Transmission and Wait

Vertical resolution format conversion

Command

5.2.3 AT Commands originating from GSM 07.07

Table 5-3: AT commands from GSM 07.07

# AT Command

75 AT+CACM Accumulated call meter (ACM) reset or query

76 AT+CALA Set alarm time

Differing references to URC implementation in autobauding

TC35i TC35

Indicates ME wake-up into Alarm mode:

^SYSSTART ALARM MODE

+CALA: <text>

Indicates ME wake-up into Alarm mode:

^SYSSTART ALARM MODE

+CALA: <text>

If autobauding is active (AT+IPR=0) the URCs

^SYSSTART ALARM MODE does not appear but your individual <text> message will be displayed.

If autobauding is active (AT+IPR=0) the URCs

^SYSSTART ALARM MODE and +CALA: <text> do not appear. Therefore, avoid using Alarm mode in conjunction with autobauding.

77 AT+CAMM

78 AT+CAOC

79 AT+CBST

80 AT+CCFC

Accumulated call meter maximum (ACMmax) set or query

Advice of Charge information

Select bearer service type

Call forwarding number and conditions control

81 AT+CCLK

82 AT+CEER

Real Time Clock

Extended error report

83 AT+CFUN Set phone functionality

Differing parameters and notes

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#

TC35i

AT Command

<fun> parameter now accepts CYCLIC SLEEP MODE values

5, 6, 7 and 8, in addition to SLEEP MODE / FULL FUNCT., supported so far by TC35:

TC35

5

6

7

8

Reduced functionality (CYCLIC SLEEP MODE)

The serial interface is enabled with every "wake up". If characters are recognized the serial interface will stay active for 2 seconds (after last character).


The serial interface is enabled with every "wake up". If characters are recognized the serial interface will stay active for 10 minutes (after last character).Note: In any case, any circuit switched calls will be terminated.


The serial interface is enabled with every "wake up". If characters are recognized the serial interface will stay active for 2 seconds (after last character). The sole exception for wake up is at+cfun=1.


The serial interface is enabled with every "wake up". If characters are recognized the serial interface will stay active for 10 minutes (after last character). The sole exception for wake up is at+cfun=1.

<fun> parameter accepts only values 0 and

1.

Additional notes

TC35

• To check that ME has entered the

SLEEP mode, it is recommended to measure the supply current. Depending on the configuration of the SYNC pin, the SLEEP mode may also be indicated by a status LED (see "AT^SSYNC

Configure SYNC Pin", pg. 177).

• When in SLEEP mode, the following events may cause the ME to wake up: incoming call, Real Time Clock alarm, falling edge of RTS (RS-232, 2.65V

CMOS level) and receipt of an unsolicited result code (URC, see chapter 7.1.3).

Additional notes

TC35i

• To check the current operation mode see „AT^SSYNC

Configure SYNC Pin", pg. 181.

• To check if ME has entered SLEEP mode it is necessary to measure the supply current. SLEEP mode actually starts after remaining network activities were terminated.

• For SLEEP mode functionalities (<fun>=0, 5, 6) will not work without PIN1.

• After reset it is necessary to enter PIN1 again.

• In SLEEP mode the device wakes up by incoming call, short message, Real Time Clock alarm, falling edge of

RTS (RS-232 levels) and upon receipt of an unsolicited result code (URC, see chapter 10.1.4).

• In CYCLIC SLEEP mode device wakes up by incoming call, short message (only if notification output is configured using AT+CNMI=1,1), Real Time Clock alarm and upon receipt of an unsolicited result code

(URC, see chapter 10.1.4). RTS signal is only for handshake and does not wake up the ME.

• In CYCLIC SLEEP mode 7 and 8 device wakes up by incoming call, short message, Real Time Clock alarm and upon receipt of an unsolicited result code but continues the CYCLIC SLEEP after the event is finished. Only with at+cfun=1 the system wakes up permanently. RTS signal is only for handshake and does not wake up the ME.

84 AT+CGMI

85 AT+CGMM

86 AT+CGMR

87 AT+CGSN

88 AT+CHLD

89 AT+CHUP

90 AT+CIMI

Request manufacturer identification

Request model identification

Request revision identification of software status

Request product serial number identification (IMEI) identical to GSN

Call hold and multiparty

Hang up call

Request international mobile subscriber identity

91 AT+CLCC

92 AT+CLCK

List current calls of ME

Facility lock

93 AT+CLIP

94 AT+CLIR

Calling line identification presentation

Calling line identification restriction


TC35i TC35

TC35i supports +CLIR as a proper AT command with its own syntax.

TC35 implementation was limited to ATD command with SS codes.

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# AT Command

95 AT+CLVL

96 AT+CMEE

97 AT+CMUT

98 AT+CMUX

99 AT+COPN

100 AT+COPS

101 AT+CPAS

102 AT+CPBR

103 AT+CPBS

104 AT+CPBW

105 AT+CPIN

106 AT+CPIN2

107 AT+CPUC

108 AT+CPWD

109 AT+CR

Loudspeaker volume level

Report mobile equipment error

Mute control

Enter multiplex mode

Read operator names

Operator selection

Mobile equipment activity status

Read current phonebook entries

Select phonebook memory storage

Write phonebook entry

Enter PIN

Enter PIN2

Price per unit and currency table

Change password

Service reporting control

110 AT+CRC

111 AT+CREG

112 AT+CRLP

113 AT+CRSM

114 AT+CSCS

115 AT+CSNS

116 AT+CSQ

117 AT+CSSN

Set Cellular Result Codes for incoming call indication

Network registration

Select radio link protocol param. for orig. non-transparent data call

Restricted SIM access

Set TE character set

Single Numbering Scheme

Signal quality

Supplementary service notifications

118 AT+CUSD

119 AT+VTD=<n>

Unstructured supplementary service data

Tone duration

120 AT+VTS DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C, D})


TC35i TC35

Available without entering the PIN.

PIN required.

121 AT+WS46 Select wireless network

5.2.4 AT commands originating from GSM 07.05 for SMS

Table 5-4: AT commands for SMS

# AT

122 AT+CMGC

123 AT+CMGD

124 AT+CMGF

125 AT+CMGL

126 AT+CMGR

Send an SMS command

Delete SMS message

Select SMS message format

List SMS messages from preferred store

Read SMS message

Command

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# AT


TC35i

Filler "FF" will be displayed at PDU status report if

<FF> is set to 1 at AT^SSCONF

Command

127 AT+CMGS

128 AT+CMGW

129 AT+CMSS

130 AT+CNMA

131 AT+CNMI

TC35i

Send SMS message

Write SMS message to memory

Send SMS message from storage

New SMS message acknowledge to ME/TE, only phase 2+

New SMS message indications

Differing implementation related to GSM phase 2+ compatibility issues and +CNMA requirements; differing notes

TC35

AT+CNMI settings requiring phase 2+ should be independent from AT+CSMS!

WRITE syntax:

WRITE syntax:

Note 2: - (not enforced)

Note 3: - (not enforced)

Note2: The rules <mt>=2 and <mt>=3 for storing received

SM are possible only if phase 2+ compatibility is activated with

+CSMS=1

Note3: The parameter <ds>=1 is only available in phase 2+

Note: - (not required) Note:

Parameters <mt>=2,3 and <ds>=1 are only available with

GSM phase 2+ (see +CSMS=1). Incoming SMs or Status

Reports have to be acknowledged with AT+CNMA=0 when using these phase 2+ parameters.

132 AT+CPMS Preferred SMS message storage

Differing parameters and implementation

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#

TC35i

AT Command

Additional storage in ME memory for 25 SMS:

<mem1> Messages to be read and deleted from this memory storage:

"SM" storage

SIM message

<mem2> Messages will be written and sent to this memory storage:

"SM" SIM message storage

"ME" Mobile Equipment message storage

"MT" Any of the storages associated with ME

"ME" Mobile Equipment message storage


<mem3> Received messages will be placed in this memory storage if routing to TE is not set. See command AT+CNMI with parameter <mt>=2.



<usedx>Number of messages currently in

<memx>

<totalx> Number of messages storable in

<memx>

TC35

-

Note:

Only "SM" storage available:

<mem1> Memory to be used when listing, reading and deleting messages:


<mem2> Memory to be used when writing and sending messages:


<mem3> Received messages will be placed to this storage if routing to TE is not set. See AT+CNMI command with parameter <mt>=2 (Chapter 5.10).


<usedx> Number of messages currently in

<memx>

<totalx> Number of messages storable in <memx>

Note:

The Mobile Equipment storage "ME" has space for

25 short messages.

The storage "MT" is the sum of the storages "ME" and "SM". The indices (<index>) from 1 to 25 are associated to the "ME" storage. Indices equal to

26 and higher belong to the "SM" storage.

Incoming short messages with message class 1 or

2 (refer <dcs> GSM 03.38) will be stored in the

"ME" or "SM" storage only. Therefore the ^SMGO:

2 indication (see AT^SMGO) could occur, without the indication ^SMGO: 1 before.

When switching parameter <mem3> from ''MT'' to

''SM'' the ''ME'' storage will be filled with dummy short messages. Therefore the execution can last up to 35 seconds if all the 25 records have to be written.

When switching back from ''SM'' to ''MT'' the dummy short messages will be deleted. The execution could last 35 seconds, too.

In case of short messages present in the ''ME'' storage they will be remembered when switching back from ''SM'' to ''MT''.

The <mem1>, <mem2> and <mem3> parameter will be stored in non-volatile memory.

Multiplexer: The parameter <mem3> will be the same for all instances. The parameter

<mem2> and <mem3> can differ from one instance to the other.

133 AT+CSCA

134 AT+CSCB

135 AT+CSDH

SMS service centre address

Select cell broadcast message

Show SMS text mode parameters

136 AT+CSMP

137 AT+CSMS

Set SMS text mode parameter

Select Message Service

Differing implementation related to GSM phase 2+ compatibility issues and +CNMA requirements; differing notes

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#

TC35i

AT

Note:

If CSMS is switched to <service> = 1, all messages with phase 2+ (see AT^SCNMI with <mt>= 2,

<mt>= 3, <ds>= 1) has to be acknowledged with

AT+CNMA (see AT+CNMA)

Command

TC35

Note:

If CSMS Mode is switched from Phase 2+ to Phase

2 and one or more CNMI Parameter are Phase 2+ specific a '+CMS ERROR: unknown error' will appear. It is recommended to switch the CNMI

Parameters to Phase 2 specific values before entering Phase 2.

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5.2.5 Siemens defined AT commands for enhanced functions

Table 5-5: Siemens defined AT commands

# AT

138 AT+CXXCID Display card ID (identical to AT^SCID)


TC35i


Command

TC35

PIN required.

139 AT^MONI Monitor idle mode and dedicated mode

Differing parameters; minor differences in wording of command syntax description; differing notes

140 AT^MONP

141 AT^SACM

142 AT^SBC

Monitor neighbour cell

Advice of charge and query of ACM and ACMmax

Battery charging / discharging and charge control

143 AT^SCID Display SIM card identification number


TC35i


TC35

PIN required.

144 AT^SCKS

145 AT^SCNI

Set SIM connection presentation mode and query SIM connection status

List Call Number Information

146 AT^SCTM Set critical operating temperature presentation mode or query temperature

Differing parameters, notes and examples

TC35i TC35

TC35i has two additional parameters:

<p> output/suppress <temp> in read syntax

<temp> board temperature, Celsius

N/A

<p> 0 Suppress output of <temp> in test and read command.

1 Output <temp> in test and read command.

<temp> Board temperature in Celsius. Is comprised between the lowest temperature limit and the uppermost temperature limit.

Syntax:

AT^SCTM=<n>[,<p>]

147 AT^SDLD

148 AT^SHOM

149 AT^SLCD

150 AT^SLCK

151 AT^SMGL

152 AT^SMGO

153 AT^SMGR

154 AT^SMONC

Delete the .last number redial. memory

Display Homezone

Display Last Call Duration

Facility lock

List SMS messages from preferred storage

Set or query SMS overflow presentation mode or query SMS overflow

Read SMS message without set to REC READ

Cell Monitoring

155 AT^SMSO

156 AT^SM20


TC35i

Switch off mobile station

Set M20 Compatibility

TC35

Additional parameter:

<n>

<m> parameter.

Call compatibility parameter

0 Compatible to x35 Mobile

Phones

1 Compatible to M20

Short message write compatibility

0

1

Compatible to x35 Mobile

Phones

Compatible to M20

<n>

0 Compatible to x35/37mobiles.

If this mode is active, TA returns OK right after attempting a call.

1 Compatible to M20.

If the M20 mode is active, TA returns OK once the call is successfully set up. Issuing any command before TA returns OK will cancel the call setup.

157 AT^SNFD

158 AT^SNFI

159 AT^SNFM

160 AT^SNFO

Set audio parameters to manufacturer default value

Set microphone path parameters

Mute microphone

Set audio output (= loudspeaker path) parameter

161 AT^SNFPT

162 AT^SNFS

Call progress tones

Select audio hardware set

Differences in command syntax description; differing notes

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#

TC35i

AT Command

<audioMode>

1 Audio mode 1: Standard mode optimised for the default handset, that can be connected to the analogue interface 1 (see your "Hardware Interface

Description" for information on this handset.) To adjust the volume use the knob of the default handset. This handset can be used in audio mode 4 with user defined parameters.

Note: The default parameters are determined for type approval and are not adjustable with AT commands.

TC35

<audMode>

1 Audio mode 1: Standard mode optimised for the default handset, that can be connected to the analogue interface 1 (see your "Hardware Interface

Description" for information on this handset.) To adjust the volume use the knob of the default handset. In audio mode 4 and 5, this handset can be used with user defined parameters.

Note: The default parameters are determined for type approval and are not adjustable with AT commands.

163 AT^SNFV

164 AT^SNFW

TC35i

Set loudspeaker volume

Write audio setting in non-volatile store

Differing implementation and notes

TC35

ME stores the following audio parameter values in non-volatile memory:<audioMode>, <inBbcGain>,

<inCalibrate>, <outBbcGain>, <outCalibrate[0]>

... <outCalibrate[4]>, <side Tone>

Saved parameters: <inBbcGain>, <inCalibrate>,

<outBbcGain>, <outCalibrate[0]> ...

<outCalibrate[4]>, <side Tone>

165 AT^SPBC

166 AT^SPBG

167 AT^SPBS

168 AT^SPIC

169 AT^SPLM

Search the first entry in the sorted telephone book

Read entry from active telephone book via sorted index

Steps the selected phonebook alphabetically

Display PIN counter

Read the PLMN list

170 AT^SPLR

171 AT^SPLW

172 AT^SPWD

173 AT^SSCONF

Read entry from the preferred operators list

Write an entry to the preferred operators list

Change password for a lock

SMS Configuration

174 AT^SSDA

175 AT^SSYNC

Set Display Availability

Configure SYNC Pin

Differing notes on implementation (references to TC35T) and operating modes

176 AT^STCD Display Total Call Duration

5.3 List of new AT-Commands

This chapter lists only new commands, supported exclusively by TC35i.

5.3.1 AT Commands for SIM Application Toolkit (GSM 11.14)

Table 5-6: AT commands for SAT

# AT

1 AT^SSTA

2 AT^SSTN

3 AT^SSTGI

4 AT^SSTR

Remote-SAT Interface Activation

Remote-SAT Notification

Remote-SAT Get Information

Remote-SAT Response

Command

5.3.2 AT Commands originating from GSM 07.07

Table 5-7: AT commands from GSM 07.07- new

# AT

5 AT+CCWA

6 AT+CCUG

7 AT+CMER

Call waiting

Closed User Group

Mobile Equipment Event Reporting

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#

8 AT+CIND

AT

Indicator Control

Command

5.3.3 Commands from change requests TC/AC/MC35

Table 5-8: AT commands from change requests

#

9 AT^SRTC

AT

Select, query and test ringing tones

Command

5.3.4 New features for TC35i only – misc.

Table 5-9: New TC35i features

# AT

10 AT\V

11 AT^SAIC

12 AT^SMOND

13 AT^SSR

14 AT%D

15 AT+ICF

16 AT+IFC

17 AT+CMMS

Configure CONNECT Response

Audio Interface Configuration

Monitoring

SIM READY

Automatic dial on DTR line activation

Set TE-TA control character framing

Set TE-TA local data flow control

More Messages to Send

Command

5.3.5 Siemens defined AT commands for enhanced functions

Table 5-10: New Siemens defined AT commands

#

18 AT^SNFA

19 AT^SLMS

20 AT^SBV

21 AT^SPBD

AT

Set or query of microphone attenuation

List Memory Storage

Battery Voltage

Delete the given Phonebook

Command

5.4 List of unsupported AT-Commands

TC35i supports the entire TC35 AT command set.

5.5 List of AT-Commands for V.25ter compatibility

These commands return "OK" but have no functionality in both TC35i and TC35.

Table 5-11: V.254ter compatibility commands

#

1 ATL

2 ATM

3 ATP

4 ATS2*

5 ATS6

6 ATS8

7 ATT

AT Command

Set monitor speaker loudness

Set monitor speaker mode

Select pulse dialling

Escape code sequence

Set pause before blind dialling

Set number of seconds to wait for comma dial modifier

Select tone dialling

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*not "formally" listed as supported by TC35i.

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Siemens TC35 Specifications

Siemens Cellular Engine

Migration from TC35 to

TC35i

Preliminary

Migration from TC35 to TC35i

1 Revision history

2 General info

3 Feature migration

4 Hardware migration

5 AT-Commands migration

Related manuals

Siemens

TC35 Terminal

Electro-Voice

TC35 Cone Tweeter

Real Time Devices

GSM35

Siemens

L36880-N8615-A100

Siemens

TC35 Terminal

Siemens

Modem TC35

Siemens

7

Siemens

TC35 Terminal

Siemens

TC35 Terminal