Telit Communications S p A GM862P Users Manual
Telit GM862 PCS
Tri Band GPRS Data Terminal System
TECHNICAL
MANUAL
Code: 1vv0300638
Rev. 2
Oct. 23, 2003
TECHNICAL MANUAL
T elit GM862 PCS
Tri Band GPRS Data Terminal System
REVISION INDEX
REV
MOD.
SUBJECT OF MODIFICA TION
DATE SIGNATURE
1 Change pcb revision from CS1083 to CS1083a 17/07/03
2 Change value on a PCB components 21/10/03
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System
INDEX Part1 CAP TITLE REV 1 INTRODUCTION 2 2 MECHANICAL VIEW 0 3TECHNICAL SPECIFICATIONS1
TECHNICAL MANUAL
T elit GM862 PCS
Tri Band GPRS Data Terminal System
Rev. 2
1 INTRODUCTION
The Telit GM862 PCS is a Tri Band transceiver with integrated Data Terminal Adapter
functions that emulates a traditional modem allowing the compatibility in GSM/DCS/
PCS environment with many data communication software.
The design and development of the Telit GM862 PCS Tri Band cellular data terminal
system is in line with the following documents:
3GPP TS 51.010–1 v. 4.4.0 GSM/EDGE Radio Access Network; Digital cellular
telecommunications system (Phase 2+): Mobile Station (MS) Conformance
Specification; Part 1. Conformance Specification.
EN 301 511 Global system for mobile communications (GSM); Harmonised standard
for mobile stations in the GSM 900 and DCS 1800 bands covering essential
requirements under Article 3(2) of the R&TTE directive (1999/5/EC).
EN 60950 Safety of information technology equipment, including business equipment.
EN 301 489–07 Electromagnetic compatibility and radio spectrum matters (ERM);
Electromagnetic compatibility (EMC) standard for radio equipment and services; Part
7: Specific conditions for mobile and portable radio and ancillary equipment of digital
cellular radio telecommunications systems (GSM and DCS).
Page 1 of 2
TECHNICAL MANUAL
T elit GM862 PCS
Tri Band GPRS Data Terminal System
Rev. 2
1.1 Delta HW between GM862–PCS HW rev.1 and GM862–PCS HW rev.2
The changes that determines the difference between the GM862–PCS HW rev.1 and
the GM862–PCS HW rev.2 are the following:
On the GM862–PCS HW rev.2 the following components are added/changed:
Added: R103 47KOhm 0402 between AXE and Vcore.
See CP030027 for further details.
Changed: R327 changed value from 220R 5% 0402 to 820R 5% 0402
See CP030041 for further details.
Page 2 of 2
TECHNICAL MANUAL
T elit GM862 PCS
Tri Band GPRS Data Terminal System
2 MECHANICAL VIEW
2.1 Mechanical view Telit GM862 PCS
Page 1 of 1
MODIFICA
DATA
Scala:
1:1
Toll.gen.
Materiale:
Annotazioni:
Valido da:
Foglio
11
Sostituisce il N.
N.fogli
Il presente disegno a termini di legge non deve essere utilizzato per la costruzione del particolare ne’ riprodotto o reso pubblico senza il nostro permesso scritto.
DIS
Lucà
Progetto
0260
Verif.
Data
03.07.2003
Denominazione dell’oggetto:
CODICE
MECHANICAL VIEW GM862 PCS 40260NT10072
TECHNICAL MANUAL
T elit GM862 PCS
Tri Band GPRS Data Terminal System
Rev. 1
3 TECHNICAL SPECIFICATIONS
The scope of this document is to summarize the technical characteristics of the Telit
GM862 PCS Data Terminal System.
Page 1 of 1
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Contents
1 GENERAL PRODUCT DESCRIPTION.................................................................................7
1.1 Dimensions .............................................................................................................................................................................7
1.2 Weight......................................................................................................................................................................................8
1.3 Environmental requirements ............................................................................................................................................8
1.3.1 Temperature range.......................................................................................................................................................8
1.3.2 Vibration Test (non functional).................................................................................................................................8
1.4 Operating Frequency...........................................................................................................................................................9
1.5 Transmitter output power..................................................................................................................................................9
1.6 Reference sensitivity.............................................................................................................................................................9
1.7 Antenna ................................................................................................................................................................................ 10
1.7.1 Antenna connector.....................................................................................................................................................10
1.8 Supply voltage.................................................................................................................................................................... 12
1.9 Power consumption...........................................................................................................................................................12
1.10 Embodied Battery charger..............................................................................................................................................12
1.11 User Interface..................................................................................................................................................................... 13
1.11.1 Speech Coding............................................................................................................................................................13
1.11.2 Sim Reader..................................................................................................................................................................13
1.11.3 SMS..............................................................................................................................................................................13
1.11.4 Real Time Clock and Alarm.....................................................................................................................................13
1.11.5 Data/fax transmission................................................................................................................................................13
1.11.6 Local security management......................................................................................................................................14
1.11.7 Call control ..................................................................................................................................................................14
1.11.8 Phonebook...................................................................................................................................................................14
1.11.9 Characters management ............................................................................................................................................14
1.11.10 SIM related functions................................................................................................................................................14
1.11.11 Call status indication.................................................................................................................................................14
1.11.12 Indication of network service availability.............................................................................................................14
1.11.13 Automatic answer (Voice, Data or FAX)..............................................................................................................15
1.11.14 Supplementary services (SS)....................................................................................................................................15
1.11.15 Acoustic signaling.....................................................................................................................................................15
1.11.16 DTMF tones................................................................................................................................................................15
1.11.17 Buzzer output.............................................................................................................................................................16
1.12 EMC.......................................................................................................................................................................................16
1.13 Logic level specifications .................................................................................................................................................16
1.13.1 Reset signal.................................................................................................................................................................17
1.14 Audio levels specifications...............................................................................................................................................19
1.15 Interface connectors on GM862-PCS ..........................................................................................................................20
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.16 Mounting the GM862-PCS on your Board................................................................................................................. 25
1.16.1 Antenna Coaxial cable fixing...................................................................................................................................25
1.16.2 Precautions..................................................................................................................................................................26
2 AT COMMAND........................................................................................................................27
2.1 Definitions............................................................................................................................................................................27
2.2 AT Command Syntax.......................................................................................................................................................28
2.2.1 Command lines...........................................................................................................................................................28
2.2.2 Information responses and result codes .................................................................................................................29
2.2.3 Command Response Timeout..................................................................................................................................29
2.2.4 Command issuing timing..........................................................................................................................................32
2.2.5 Factory Profile and parameters stored in the profile ............................................................................................32
2.3 Command Availability Table......................................................................................................................................... 33
2.4 Hayes Compliant AT Commands .................................................................................................................................39
2.4.1 Generic Modem Control...........................................................................................................................................39
2.4.1.1 &F - restore factory configuration.....................................................................................................................39
2.4.1.2 Z - soft reset...........................................................................................................................................................39
2.4.1.3 +FCLASS - select active service class.............................................................................................................40
2.4.1.4 &Y - designate a default reset profile ...............................................................................................................40
2.4.1.5 &W - store current configuration.......................................................................................................................41
2.4.1.6 &Z - store telephone number in the Telit GM862-PCS module internal phonebook...............................41
2.4.1.7 &N - display internal phonebook stored numbers..........................................................................................42
2.4.1.8 +GMI - request manufacturer identification....................................................................................................42
2.4.1.9 +GMM - request model identification..............................................................................................................42
2.4.1.10 +GMR - request revision identification............................................................................................................43
2.4.1.11 +GCAP - request capabilities list ......................................................................................................................43
2.4.1.12 +GSN - request serial number............................................................................................................................43
2.4.1.13 &V - display current configuration & profile..................................................................................................44
2.4.1.14 &V0 - display current configuration & profile................................................................................................45
2.4.1.15 &V1 - display S registers values .......................................................................................................................45
2.4.1.16 &V2 - display last connection statistics ...........................................................................................................46
2.4.1.17 \V - single line connect message.......................................................................................................................46
2.4.1.18 %L - report line signal level................................................................................................................................47
2.4.1.19 %Q - report line quality .......................................................................................................................................47
2.4.2 DTE - modem interface control...............................................................................................................................48
2.4.2.1 E - command echo................................................................................................................................................48
2.4.2.2 Q - quiet resut codes ............................................................................................................................................48
2.4.2.3 V- result code form...............................................................................................................................................49
2.4.2.4 X - extended result codes....................................................................................................................................49
2.4.2.5 I - Request identifier and software checksum ..................................................................................................50
2.4.2.6 &C - data carrier detect (DCD) control............................................................................................................50
2.4.2.7 &D - data terminal ready (DTR) control..........................................................................................................51
2.4.2.8 &K - flow control .................................................................................................................................................51
2.4.2.9 &S - data set ready (DSR) control.....................................................................................................................52
2.4.2.10 \R - ring (RI) control............................................................................................................................................53
2.4.2.11 +IPR - fixed DTE interface rate .........................................................................................................................53
2.4.2.12 +IFC - DTE - DTA flow control........................................................................................................................54
2.4.2.13 +ILRR - DTE - modem rate reporting..............................................................................................................55
2.4.2.14 +ICF - DTE - modem character format............................................................................................................56
2.4.3 Call Control.................................................................................................................................................................57
2.4.3.1 D - dial ....................................................................................................................................................................57
2.4.3.2 T - set tone dial ......................................................................................................................................................59
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
2.4.3.3 P - set pulse dial....................................................................................................................................................59
2.4.3.4 A - answer..............................................................................................................................................................59
2.4.3.5 A/ - Last command automatic repetition..........................................................................................................60
2.4.3.6 H - disconnect.......................................................................................................................................................60
2.4.3.7 O - return to On Line Mode................................................................................................................................61
2.4.3.8 &G - guard tone....................................................................................................................................................61
2.4.3.9 &P - pulse dial make/break ratio ........................................................................................................................62
2.4.4 Modulation control....................................................................................................................................................62
2.4.4.1 +MS - modulation control...................................................................................................................................62
2.4.4.2 %E - enable/disable line quality monitor and auto retrain or fallback / fallforward.................................63
2.4.5 Compression control.................................................................................................................................................64
2.4.5.1 +DS - set data compression................................................................................................................................64
2.4.5.2 +DR - data compression reporting....................................................................................................................64
2.4.6 Break control...............................................................................................................................................................65
2.4.6.1 \B - transmit break to remote..............................................................................................................................65
2.4.6.2 \K - break handling...............................................................................................................................................65
2.4.7 S parameters................................................................................................................................................................66
2.4.7.1 S0 - number of rings to auto answer.................................................................................................................66
2.4.7.2 S1 - ring counter ...................................................................................................................................................66
2.4.7.3 S2 - escape character............................................................................................................................................67
2.4.7.4 S3 - carriage return character..............................................................................................................................67
2.4.7.5 S4 - line feed character ........................................................................................................................................68
2.4.7.6 S5 - backspace character.....................................................................................................................................68
2.4.7.7 S7 - wait time for carrier, silence or dial tone.................................................................................................69
2.4.7.8 S10 - lost carrier to hang up delay.....................................................................................................................69
2.4.7.9 S12 - escape prompt delay..................................................................................................................................70
2.4.7.10 S25 - delay to DTR off.........................................................................................................................................70
2.4.7.11 S30 - disconnect inactivity timer........................................................................................................................71
2.4.7.12 S38 - delay before forced hang up.....................................................................................................................71
2.5 ETSI GSM 07.07 AT Commands ..................................................................................................................................72
2.5.1 General.........................................................................................................................................................................72
2.5.1.1 +CGMI - request manufacturer identification.................................................................................................72
2.5.1.2 +CGMM - request model identification...........................................................................................................72
2.5.1.3 +CGMR - request revision identification.........................................................................................................72
2.5.1.4 +CGSN - request product serial number identification..................................................................................73
2.5.1.5 +CSCS - select TE character set........................................................................................................................73
2.5.1.6 +CIMI - request international mobile subscriber identity (IMSI)................................................................74
2.5.2 Call control..................................................................................................................................................................75
2.5.2.1 +CBST - select bearer service type...................................................................................................................75
2.5.2.2 +CRLP - radio link protocol...............................................................................................................................76
2.5.2.3 +CR - service reporting control.........................................................................................................................77
2.5.2.4 +CEER - extended error report ..........................................................................................................................78
2.5.2.5 +CRC - cellular result codes ..............................................................................................................................79
2.5.3 Network service handling.........................................................................................................................................80
2.5.3.1 +CNUM - subscriber number.............................................................................................................................80
2.5.3.2 +CREG - network registration report ................................................................................................................81
2.5.3.3 +COPS - operator selection................................................................................................................................83
2.5.3.4 +CLCK - facility lock/ unlock............................................................................................................................84
2.5.3.5 +CPWD - change facility password..................................................................................................................85
2.5.3.6 +CLIP - calling line identification presentation..............................................................................................86
2.5.3.7 +CLIR - calling line identification restriction.................................................................................................87
2.5.3.8 +CCFC - call forwarding number and conditions..........................................................................................88
2.5.3.9 +CCWA - call waiting.........................................................................................................................................90
2.5.3.10 +CHLD - call holding services ..........................................................................................................................91
2.5.3.11 +CUSD - unstructured supplementary service data........................................................................................92
2.5.3.12 +CAOC - advice of charge..................................................................................................................................94
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
2.5.3.13 +CLCC - list current calls ..................................................................................................................................95
2.5.3.14 +CSSN – SS Notification....................................................................................................................................96
5.4.3.15 +CCUG – Closed User Group supplementary service control....................................................................97
2.5.4 Mobile Equipment control........................................................................................................................................98
2.5.4.1 +CPAS - phone activity status..........................................................................................................................98
2.5.4.2 +CFUN Set phone functionality (Power Saving Management)...................................................................99
2.5.4.3 +CPIN - enter PIN..............................................................................................................................................100
2.5.4.4 +CSQ- signal quality..........................................................................................................................................102
2.5.4.5 +CPBS - select phonebook memory storage.................................................................................................103
2.5.4.6 +CPBR - read phonebook entries....................................................................................................................104
2.5.4.7 +CPBF - find phonebook entries.....................................................................................................................105
2.5.4.8 +CPBW - write phonebook entry....................................................................................................................106
2.5.4.9 +CCLK - Clock Management..........................................................................................................................107
2.5.4.10 +CALA - Alarm Management.........................................................................................................................108
2.5.4.11 +CALM - alert sound mode..............................................................................................................................110
2.5.4.12 +CRSL - ringer sound level..............................................................................................................................110
2.5.4.13 +CLVL - loudspeaker volume level................................................................................................................111
2.5.4.14 +CMUT - microphone mute control ...............................................................................................................111
2.5.4.15 +CACM - accumulated call meter...................................................................................................................112
2.5.4.16 +CAMM - accumulated call meter maximum...............................................................................................112
2.5.4.17 +CPUC - price per unit and currency table....................................................................................................113
2.5.5 Mobile equipment errors.........................................................................................................................................114
2.5.5.1 +CMEE - report mobile equipment error.......................................................................................................114
2.5.5.2 +CME ERROR: - ME error result code.........................................................................................................115
2.5.6 Voice Control (TIA IS-101)...................................................................................................................................116
2.5.6.1 +VTS: - DTMF tones transmission.................................................................................................................116
2.5.7 Commands For GPRS .............................................................................................................................................117
2.5.7.1 +CGACT - PDP context activate or deactivate.............................................................................................117
2.5.7.2 +CGATT - GPRS attach or detach..................................................................................................................118
2.5.7.3 +CGDATA - Enter data state ...........................................................................................................................119
2.5.7.4 +CGDCONT - define PDP context .................................................................................................................120
3.3.7.1 +CGPADDR - show PDP address..................................................................................................................121
2.5.7.5 +CGREG - GPRS network registration status ..............................................................................................122
3.3.7.2 +CGQMIN - quality of service profile (minimum acceptable)..................................................................123
3.3.7.3 +CGQREQ - quality of service profile (requested)......................................................................................124
2.5.8 Commands For Battery Charger............................................................................................................................125
2.5.8.1 +CBC - Battery Charge.....................................................................................................................................125
2.6 ETSI GSM 07.05 AT Commands for SMS and CB services...............................................................................126
2.6.1 General configuration..............................................................................................................................................126
2.6.1.1 +CSMS - select message service .....................................................................................................................126
2.6.1.2 +CPMS - preferred message storage...............................................................................................................127
2.6.1.3 +CMGF - message format.................................................................................................................................128
2.6.1.4 +CSMP – Set parameters in text mode...........................................................................................................128
2.6.1.5 +CSDH – Show parameters in text mode.......................................................................................................129
2.6.1.6 +CSAS – Save setting text mode .....................................................................................................................129
2.6.1.7 +CRES – Restore text mode settings..............................................................................................................130
2.6.1.8 +CSCB – Select Cell Broadcast Message types ...........................................................................................131
2.6.1.9 +CMS ERROR - message service failure result code..................................................................................132
2.6.2 Message configuration............................................................................................................................................133
2.6.2.1 +CSCA - service center address......................................................................................................................133
2.6.3 Message receiving and reading .............................................................................................................................134
2.6.3.1 +CNMI - new message indications to Terminal Equipment.......................................................................134
2.6.3.2 +CMGL - list messages.....................................................................................................................................136
2.6.3.3 +CMGR - read message ....................................................................................................................................138
2.6.4 Message sending and writing.................................................................................................................................140
2.6.4.1 +CMGS - send message....................................................................................................................................140
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
2.6.4.2 +CMSS - send message from storage.............................................................................................................141
2.6.4.3 +CMGW - write message to memory............................................................................................................142
2.6.4.4 +CMGD - delete message.................................................................................................................................143
2.7 Custom AT Commands..................................................................................................................................................144
2.7.1 General configuration..............................................................................................................................................144
2.7.1.1 #CAP - Change Audio Path..............................................................................................................................144
2.7.1.2 #SRS - Select ringer sound...............................................................................................................................145
2.7.1.3 #SRP –Select Ringer Path.................................................................................................................................146
2.7.1.4 #STM - Signalling Tones Mode ......................................................................................................................147
2.7.1.5 #PCT – display PIN Counter............................................................................................................................147
2.7.1.6 #SHDN – Software Shut Down .......................................................................................................................148
2.7.1.7 #WAKE – Wake from Alarm mode ................................................................................................................149
2.7.1.8 #QTEMP –Query Temperature overflow.......................................................................................................150
2.7.1.9 #SGPO –Set General Purpose Output............................................................................................................151
2.7.1.10 #GGPI – Read General Purpose Input............................................................................................................152
2.7.1.11 #GPIO –General Purpose Input/Output pin control.....................................................................................153
2.7.1.12 #MONI – Monitor Cells ....................................................................................................................................155
2.7.1.13 #QSS – Query SIM Status ................................................................................................................................156
2.7.1.14 #ACAL – Set Automatic Call...........................................................................................................................157
2.7.1.15 #SMOV – SMS Overflow .................................................................................................................................158
2.7.1.16 #SHFEC – Set Handsfree echo canceller.......................................................................................................158
2.7.1.17 #HFMICG – Handsfree Microphone Gain.....................................................................................................159
2.7.1.18 #HSMICG – Handset Microphone Gain ........................................................................................................159
2.7.1.19 #SHFSD – Set Handsfree side tone................................................................................................................160
2.7.1.20 #/ – Repeat last command.................................................................................................................................160
2.7.1.21 #BND – Select Band (DCS 1800 or PCS 1900)...........................................................................................161
2.8 FAX Class 1 Commands ................................................................................................................................................162
2.8.1 General configuration..............................................................................................................................................162
2.8.1.1 +FCLASS - select active service class...........................................................................................................162
2.8.1.2 +FMI – Report manufacturer ID......................................................................................................................163
2.8.1.3 +FMM? – Report model ID..............................................................................................................................163
2.8.1.4 +FMR – Report revision ID..............................................................................................................................164
2.8.2 Transmission/Reception control............................................................................................................................164
2.8.2.1 +FTS – Stop Transmission and pause............................................................................................................164
2.8.2.2 +FRS – Wait for receive silence......................................................................................................................165
2.8.2.3 +FTM – Transmit data modulation.................................................................................................................165
2.8.2.4 +FRM – Receive data modulation ...................................................................................................................166
2.8.2.5 +FTH – Transmit data with HDLC framing..................................................................................................166
2.8.2.6 +FRH – Receive data with HDLC framing....................................................................................................167
2.8.3 Serial port control.....................................................................................................................................................167
2.8.3.1 +FLO – Select flow control specified by type...............................................................................................167
2.8.3.2 +FPR – Select serial port rate...........................................................................................................................168
2.8.3.3 +FDD – Double escape character replacement control ................................................................................168
2.9 Easy GPRS Extension.....................................................................................................................................................169
2.9.1 Overview...................................................................................................................................................................169
2.9.2 Easy GPRS definition..............................................................................................................................................169
2.9.2.1 Configuring the GPRS access..........................................................................................................................170
2.9.2.2 Configuring the embedded TCP/IP stack.......................................................................................................170
2.9.2.3 Defining the Internet peer to be contacted.....................................................................................................170
2.9.2.4 Open the connection with the internet host...................................................................................................170
2.9.2.5 Close the Socket and deactivate the context ..................................................................................................171
2.9.3 Known limitations ...................................................................................................................................................171
2.9.4 Easy GPRS custom AT command Definition.....................................................................................................172
2.9.4.1 #USERID – Authentication User ID control.................................................................................................172
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
2.9.4.2 #PASSW – Authentication Password control...............................................................................................173
2.9.4.3 #PKTSZ –Packet Size control..........................................................................................................................174
2.9.4.4 #DSTO – Data Sending Timeout control.......................................................................................................175
2.9.4.5 #SKTTO – Socket inactivity timeout control................................................................................................176
2.9.4.6 #SKTSET – Socket definition control............................................................................................................177
2.9.4.7 #SKTOP – Socket Open command.................................................................................................................178
2.9.4.8 #QDNS – Query DNS........................................................................................................................................178
2.9.4.9 #SKTSAV – Socket Parameters Save Command.........................................................................................179
2.9.4.10 #SKTRST – Socket Parameters Reset Command.........................................................................................180
2.10 Easy Camera custom commands.................................................................................................................................181
2.10.1.1 #CAMON – Camera ON..................................................................................................................................181
2.10.1.2 #CAMOFF – Camera OFF...............................................................................................................................181
2.10.1.3 #TPHOTO – Camera Take Photo....................................................................................................................182
2.10.1.4 #RPHOTO – Camera Read Photo...................................................................................................................182
2.10.1.5 #CSQUAL – Camera Select Quality of Photo..............................................................................................183
2.10.1.6 #CSMODE – Camera Select Operating MODE............................................................................................184
3 CONFORMITY ASSESSMENT......................................................................................... 185
LIST OF ACRONYMS................................................................................................................. 186
Page 6 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1 General Product Description
1.1 Dimensions
The Telit GM862-PCS module overall dimension are:
• Lenght: 43.9 mm
• Width: 43.9 mm
• Thickness: 6.9 mm
• Volume: ≅ 13 cm
The layout of Telit GM862-PCS module is shown in the following figure:
3
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.2 Weight
The Telit GM862-PCS module weight is 23 gr with shield and 16 gr without shield.
1.3 Environmental requirements
The Telit GM862-PCS module is compliant with the applicable ETSI reference documentation
GSM 05.05 Release1999 ETSI EN300910 V8.4.1
1.3.1 Temperature range
• Temperature in normal functional conditions –10°C ÷ +55°C
• Temperature in extreme functional conditions* –20°C ÷ +70°C
• Temperature in storage conditions –30°C ÷ +85°C
*these temperature can affect the sensitivity and performance of the module
1.3.2 Vibration Test (non functional)
• 10 ÷12Hz ASD = 1.92m 2 /s 3
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
• 12 ÷ 150Hz –3dB/oct
1.4 Operating Frequency
The operating frequencies in GSM, DCS, PCS modes are conform to the GSM specifications.
Mode Freq. TX (MHz) Freq. RX (MHz) Channels (ARFC) TX - RX offset
E-GSM-900 890.0 - 914.8 935.0 - 959.8 0 – 124 45 MHz
880.2 - 889.8 925.2 - 934.8 975 - 1023
DCS-1800 1710.2 - 1784.8 1805.2 - 1879.8 512 – 885 95 MHz
PCS-1900 1850.2 - 1909.8 1930.2 - 1989.8 512 - 810 80 MHz
NOTE: PCS 1900 is supported only in the Telit GM862-PCS module
1.5 Transmitter output power
GSM–900
The GM862-PCS transceiver module in GSM–900 operating mode are of class 4 in accordance
with the specification which determine the nominal 2W peak RF power (+33dBm) on 50 Ohm.
DCS–1800
The GM862-PCS transceiver module in DCS–1800 operating mode are of class 1 in accordance
with the specifications which determine the nominal 1W peak RF power (+30dBm) on 50 Ohm.
PCS–1900
The GM862-PCS transceiver module in PCS–1900 operating mode are of class 1 in accordance
with the specifications which determine the nominal 1W peak RF power (+30dBm) on 50 Ohm.
1.6 Reference sensitivity
GSM–900
The sensitivity of the GM862-PCS transceiver module according to the specifications for the class 4
GSM–900 portable terminals is better than –102dBm in all the operational conditions.
DCS–1800
The sensitivity of the GM862-PCS transceiver module according to the specifications for the class 1
portable terminals GSM 1800 is better than –102dBm in normal operating conditions.
PCS–1900
The sensitivity of the GM862-PCS transceiver module according to the specifications for the class 1
portable terminals PCS 1900 is better than –102dBm in normal operating conditions.
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.7 Antenna
The antenna that the customer chooses to use, depending on his application, should fulfil the
following requirements:
Frequency range Standard Dual Band frequency range,
Standard Tri Band frequency range for -PCS
Bandwith 80 MHz in GSM & 170 MHz in DCS & 140
MHz PCS band
Gain > 0 dB (referenced to l/2 dipole)
Impedance 50 ohm
Input power > 2 W peak power
NOTE: PCS 1900 frequency coverage is required only for the Telit GM862-PCS module
1.7.1 Antenna connector
The Telit GM862-PCS module includes a 50 Ohm MMCX coaxial female 2 PIN Angle Coax SMD
J01341A0081 connector to allow the antenna connection.
On the user application side the following connector must be used:
a) Telegärtner MMCX angle plug crimp - Order n. J01340A0121
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
connector is locatable at:
Telegärtner - K. Gärtner GmbH
Lerchenstrasse 35, D-71144 Steinenbronn
Phone: (+49) 71 57 125 100
NOTE: be very careful when connecting the Telit GM862-PCS module RF connector. The Telit
GM862-PCS module RF connector can be damaged if not connected with the proper antenna
RF connector. The minimum number of insertion cycles are recommended.
Page 11 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.8 Supply voltage
The external power supply must be connected to VBATT signal (see paragraph 1.15,Interface
connectors on GM862-PCS) and must fulfil the following requirements:
• Nominal operating voltage 3.8 V
• Operating voltage range 3.4 V - 4.2 V
1.9 Power consumption
The typical current consumption of the Telit GM862-PCS module are:
• Power off current (typical) 26 µA;
• Stand–by current < 17 mA
• Operating current 250 mA
• Operating current 350 mA
(< 4 mA
rms
@ typical network conditions
rms
1.9 A
rms
using command AT+CFUN )
rms
@ worst network conditions
peak
1.10 Embodied Battery charger
This feature is available only on the Telit GM862-PCS.
The battery charger is suited for 3.7V rechargeable Li-Ion battery and it might be used with less
performances also with different technology batteries. The Charger needs only 1 CURRENT
LIMITED power source input and charges the battery directly through VBATT connector pins.
• Battery charger input pin CHARGE
• Battery pins VBATT, GND
• Battery charger input voltage min 5.0 V
• Battery charger input voltage typ 5.5 V
• Battery charger input voltage max 7.0 V
• Battery charger input current max 400mA
• Battery type Rechargeable Li-Ion
NOTE: If embodied battery charger is used, then a LOW ESR capacitor of at least 100µF must be
mounted in parallel to VBATT GM862-PCS pins.
NOTE: when power is supplied to the CHARGE pin, a battery must always be connected to the
VBATT pins of the GM862-PCS.
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.11 User Interface
The user interface is managed by AT commands specified on the GSM 07.07 and 07.05
specification and listed in the chapter 2, AT Command.
1.11.1 Speech Coding
The Telit GM862-PCS vocoder supports the following rates:
• Half Rate.
• Full rate,
• Enhanced Full Rate
1.11.2 Sim Reader
The Telit GM862-PCS support phase 2 GSM11.14 - SIM 3 volts ONLY. For 5V SIM operation an
external level translator can be added.
Furthermore the Telit GM862-PCS have an internal built-in SIM card reader, so there's no need for
an external SIM housing.
The Telit GM862-PCS has an enhanced internal built-in SIM card reader that allows also hot
removal of the SIM sensing, so there's no need for an external SIM housing.
1.11.3 SMS
The Telit GM862-PCS module supports the following SMS types:
Mobile Terminated (MT) class 0 – 2 with signalling of new incoming SMS, SIM full, SMS read
Mobile Originated class 0 – 3 with writing, memorise in SIM and sending
Cell Broadcast compatible with CB DRX with signalling of new incoming SMS.
1.11.4 Real Time Clock and Alarm
The Telit GM862-PCS module supports the Real Time Clock and Alarm functions through AT
commands, furthermore an alarm output pin (GPIO6) can be configured to indicate the alarm with a
hardware line output.
1.11.5 Data/fax transmission
The Telit GM862-PCS module supports:
• Packed Data transfer GPRS Class B, Multislot Class 10.
• Data transmission according to the GSM 07.07, 07.05
• CSD up to 14.4 Kbps
• Fax service, Class 1 Group 3
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.11.6 Local security management
With lock of Subscriber Identity module (SIM), and security code request at power–up.
1.11.7 Call control
Call cost control function.
1.11.8 Phonebook
Function available to store the telephone numbers in SIM memory.
Capability depends on SIM version/memory
1.11.9 Characters management
Availability of lowercase, uppercase and IRA characters. (international reference alphabet)
In SMS PDU mode all character set are supported.
1.11.10 SIM related functions
Activation/deactivation of the numbers stored in phone book FDN, ADN and PINs. Extension at the
PIN2 for the PUK2 insertion capability for lock condition.
1.11.11 Call status indication
By AT commands.
1.11.12 Indication of network service availability
By AT commands and LED indication on dedicated output.
The STAT_LED is an Open Collector output where it is possible to directly connect a LED to show
information on the network service availability and Call status.
STAT_LED indications
LED status Device Status
permanently off device off
fast blinking
(period 1s, Ton 0,5s)
slow blinking
(period 3s, Ton 0,3s)
permanently on a call is active
Page 14 of 187
Net search / Not
registered / turning
off
Registered full
service
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.11.13 Automatic answer (Voice, Data or FAX)
After n (depends of settings) rings automatically answers with beep (see S0 param).
1.11.14 Supplementary services (SS)
• Call Barring,
• Call Forwarding,
• Calling Line Identification Presentation (CLIP),
• Calling Line Identification Restriction (CLIR),
• Call Waiting, other party call Waiting Indication,
• Call Hold, other party Hold / Retrieved Indication,
• Closed User Group supplementary service (CUG),
• Advice of Charge,
• Unstructured SS Mobile Originated (MO)
1.11.15 Acoustic signaling
The acoustic signalling of Telit GM862-PCS module on the selected acoustic device are the
following:
• Call waiting;
• Ringing tone;
• SMS received tone;
• Busy tone;
• Power on/off tone;
• Off Hook dial tone;
• Congestion tone;
• Connected tone;
• Call dropped;
• No service tone;
• Alarm tone.
1.11.16 DTMF tones
DTMF tones managed by specific AT commands.
These tones are generated with AT commands only during voice calls.
The minimum duration of a DTMF tone is 100 ms.
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TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Group high
Group low
697 Hz 1 2 3
770 Hz 4 5 6
852 Hz 7 8 9
941 Hz * 0 #
1209 Hz 1336 Hz 1477 Hz
1.11.17 Buzzer output
The General Purpose I/O pin GPIO7 can be configured to output the BUZZER output signal, with
only an external Mosfet/transistor and a diode a Buzzer can be directly driven.
The ringing tone and the other signaling tones can be redirected to this Buzzer output with a
specific AT command.
1.12 EMC
Compliant to & ETS 300–342–1 and all applicable GSM Specifications.
Compliant to Directive 1999/05/CE.
1.13 Logic level specifications
Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels.
The following table shows the logic level specifications used in the Telit GM862-PCS module
interface circuits:
Absolute Maximum Ratings -Not Functional
Parameter Min Max
Input level on any
digital pin when on
Input voltage on
analog pins when on
-0.3V +3.75V
-0.3V +3.0 V
Page 16 of 187
For 2,0V signals:
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Operating Range - Interface levels (2.8V CMOS)
Level Min Max
Input high level 2.1V 3.3V
Input low level 0V 0.5V
Output high level 2.2V 3.0V
Output low level 0V 0.35V
Operating Range - Interface levels (2.0V CMOS)
Level Min Max
Input high level 1.6V 3.3V
Input low level 0V 0.4V
Output high level 1,65V 2.2V
Output low level 0V 0.35V
1.13.1 Reset signal
Signal Function I/O Pin
RESET Phone reset I/O 23 (connector SO301)
RESET is used to reset the Telit GM862-PCS module. Whenever this signal is pulled low, the
GM862 is reset. When the device is reset it stops any operation and after the release of the reset it
shuts down, without doing any detach operation from the network where it is registered to. This
behavior is not a proper shut down because any GSM device is requested to issue a detach request
on turn off. For this reason the Reset signal must not be used to normally shutting down the device,
but only as an emergency exit in the rare case the device remains stucked waiting for some network
response.
The RESET is internally controlled on start-up to achieve always a proper power-on reset sequence,
so there's no need to control this pin on start-up. It may only be used to reset a device already on
that is not responding to any command.
NOTE: do not use this signal to power off the Telit GM862-PCS module. Use the ON/OFF
signal (Pin 17 of SO301) to perform this function or the AT#SHDN command.
Page 17 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Reset Signal Operating levels :
Signal Min Max
RESET Input high 2.2V* 3.3V
RESET Input low 0V 0.2V
* this signal is internally pulled up so the pin can be left floating if not used.
If unused, this signal may be left unconnected. If used, then it must always be connected with an
open collector transistor, to permit to the internal circuitry the power on reset and undervoltage
lockout functions.
Page 18 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.14 Audio levels specifications
The audio of the Telit GM862-PCS, module is organised into two main paths:
- internal path (called also MT)
- external path (called also HF)
These two paths are meant respectively for handset and headset/handsfree use.
The Telit GM862-PCS module has a built in echo canceller and a noise suppressor, tuned separately
for the two audio paths; for the internal path the echo canceller parameters are suited to cancel the
echo generated by a handset, while for the external audio path they are suited for a handsfree use.
For more information on the audio refer to the Hardware User Guide.
The following table reports all the audio level specifications.
Microphone characteristics
Internal audio mic. input External audio mic. input
Line coupling AC ( 100nF cond.) AC ( 100nF cond.)
Line type Balanced Balanced
Differential input resistance
Line nominal sensitivity 50mV
Max input voltage 360mV
Microphone nominal sensitivity
25kΩ 25kΩ
3mV
22mV
-45dB
rms
rms
/ +24dB -45dB
Vrms/Pa
rms
rms
Vrms/Pa
/ +10dB
- Analog Gain suggested
Echo canceller type Handset Car kit hands free
Speaker characteristics
Internal audio ear. output External audio ear. output
Line coupling DC DC
Line type Bridged Bridged
Speaker impedance
≥ 16Ω ± 5% @ 1kHz ≥ 16Ω ± 5% @ 1kHz
Minimun load impedance
15Ω 15Ω
Signal bandwidth 150-8000 Hz @ -3dB 150-8000 Hz @ -3dB
Maximum output 1700mV
rms
850mV
rms
Maximum power output 30mW 7.5mW
Volume level steps (SW) -2dB -2dB
Number of volume steps (SW) 10 10
Page 19 of 187
TECHNICAL MANUAL
vertical side)
vertical side)
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
1.15 Interface connectors on GM862-PCS
The Telit GM862-PCS module has two interface connectors and a SIM Card reader:
1) SO601: Antenna connector (see 1.7.1, Antenna connector)
2) SO301: Interface connector
3) SO402: SIM Card Reader
The GM862-PCS transceiver module interface connector SO301 is a CSTP 50 pin vertical SMD
Molex 52991–0508 (male). Its pin-out (down view) is:
49 50
1 2
Connector Position
and PIN-Out order
Antenna connector
position(on the
SIM CARD reader
position (on the
Page 20 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Molex 52991-0508 (male) GM862-PCS Connector LAY-OUT
Page 21 of 187
TECHNICAL MANUAL
Telit GM862 PCS
Tri Band GPRS Data Terminal System Rev.1
Molex 52991-0508 (male) GM862-PCS Connector PIN-OUT
Pin Signal I/O Function Internal
Pull up
1 VBATT - Main power supply Power
2 GND - Ground Power
3 VBATT - Main power supply Power
4 GND - Ground Power
5 VBATT - Main power supply Power
6 GND - Ground Power
7 VBATT - Main power supply Power
8 CHARGE AI Battery Charger Input (5) Power
9 EAR_HF+ AO Handsfree ear output, phase + Audio
10 EAR_MT- AO Handset earphone signal output, phase - Audio
11 EAR_HF- AO Handsfree ear output, phase - Audio
12 EAR_MT+ AO Handset earphone signal output, phase + Audio
13 MIC_HF- AI
Handsfree microphone input; phase -,
nominal level 3mVrms
Type
Audio
14 MIC_MT+ AI
15 MIC_HF+ AI
16 MIC_MT- AI Handset microphone signal input; phase-,
17 ON/OFF I Input command for switching power ON or
18 AXE I Handsfree switching
19 SIMIO I/O External SIM signal - Data I/O 3V ONLY
20 C103/TXD I Serial data input (TXD) from DTE CMOS 2.8V
21 PWRCTL/
CAM_SYNC
22 SIMVCC - External SIM signal – Power (3) 3V ONLY
Handset microphone signal input; phase+,
nominal level 50mVrms
Handsfree microphone input; phase +,
nominal level 3mVrms
nominal level 50mVrms
OFF (toggle command). The pulse to be
sent to the GM862 must be equal or greater
than 1 second.
O Module Status ON indication (Signal
output for power on/off control of external
devices) /
Camera interface on –PCS (4)
10KΩ
47KΩ
820Ω
Audio
Audio
Audio
CMOS 2.8V
2.0V signal
CMOS 2.8V
Page 22 of 187
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