FALCOM A2 Series Installation manual

This document is available at ftp://ftp.falcom.de/pub/a2/manuals
Funkanlagen Leipoldt, D-98704 Langewiesen, Gewerbering 6
Tel: [phone]
Fax: [phone] Email: [email protected]
FALCOM A2
(INCLUDING A2-A, A2-B, A2-1 AND EVALUATION BOARD)
User Manual / Command List
Date: 08 March 1999

FALCOM A2 A2MAN.DOC 08 MARCH 1999
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Page 1
0INTRODUCTION ...........................................................................................4
0.1 USED ABBREVIATIONS............................................................................................................... 4
0.2 RELATED DOCUMENTS............................................................................................................... 4
0.3 SECURITY ................................................................................................................................. 5
0.4 SAFETY STANDARDS .......................................................................................................... 7
1GSM 07.05 AND 07.07 COMMANDS ............................................................8
1.1 PREFACE................................................................................................................................... 8
1.2 COMMANDS CONCERNING MODEM HARDWARE........................................................................... 8
1.2.1 AT+CGMI............................................................................................................................... 8
1.2.2 AT+CGMM............................................................................................................................. 8
1.2.3 AT+CGMR.............................................................................................................................. 8
1.2.4 AT+CGSN............................................................................................................................... 9
1.3 NETWORK REGISTRATION COMMANDS ....................................................................................... 9
1.3.1 AT+CPIN ................................................................................................................................ 9
1.3.2 AT+CREG............................................................................................................................. 10
1.3.3 AT+COPS.............................................................................................................................. 10
1.3.4 AT+CSQ................................................................................................................................ 11
1.4 CALL CONTROL COMMANDS .................................................................................................... 12
1.4.1 ATD; ..................................................................................................................................... 12
1.4.2 ATD....................................................................................................................................... 12
1.4.3 ATA....................................................................................................................................... 13
1.4.4 ATH....................................................................................................................................... 13
1.4.5 AT+VGR............................................................................................................................... 13
1.4.6 AT+VGT ............................................................................................................................... 14
1.4.7 AT+VTS................................................................................................................................ 14
1.4.8 AT+VTD ............................................................................................................................... 14
1.4.9 +++........................................................................................................................................ 15
1.4.10 ATO....................................................................................................................................... 15
1.4.11 AT+CBST.............................................................................................................................. 15
1.4.12 Remote disconnection............................................................................................................. 16
1.5 CALL INFORMATION COMMANDS ............................................................................................. 16
1.5.1 AT+CR.................................................................................................................................. 16
1.5.2 AT+CRC................................................................................................................................ 16
1.6 CALL SETTING COMMANDS...................................................................................................... 17
1.6.1 ATS0 ..................................................................................................................................... 17
1.6.2 AT+CCFC ............................................................................................................................. 17
1.6.3 AT+CCWA............................................................................................................................ 18
1.6.4 AT+CLIP............................................................................................................................... 19
1.6.5 AT+CLIR............................................................................................................................... 19
1.6.6 AT+COLP ............................................................................................................................. 20
1.7 PHONEBOOK COMMANDS......................................................................................................... 21
1.7.1 AT+CPBS.............................................................................................................................. 21
1.7.2 AT+CPBR.............................................................................................................................. 21
1.7.3 AT+CPBF.............................................................................................................................. 22
1.7.4 AT+CPBW ............................................................................................................................ 23
1.8 MESSAGE HANDLING COMMANDS ............................................................................................ 24
1.8.1 AT+CSCA............................................................................................................................. 24
1.8.2 AT+CMGL............................................................................................................................ 24
1.8.3 AT+CMGR............................................................................................................................ 26
1.8.4 AT+CMGS ............................................................................................................................ 28
1.8.5 AT+CMSS............................................................................................................................. 29
1.8.6 AT+CMGW........................................................................................................................... 30
1.8.7 AT+CMGD............................................................................................................................ 31
1.9 MESSAGE SETTING COMMANDS................................................................................................ 32
1.9.1 AT+CSMS............................................................................................................................. 32
1.9.2 AT+CPMS............................................................................................................................. 32
1.9.3 AT+CMGF ............................................................................................................................ 33
1.9.4 AT+CSMP............................................................................................................................. 34
1.9.5 AT+CSDH............................................................................................................................. 34

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1.9.6 AT+CNMI............................................................................................................................. 35
1.9.7 AT+CSCB ............................................................................................................................. 35
1.10 FUNCTIONALITY COMMANDS................................................................................................... 36
1.10.1 AT+GCAP............................................................................................................................. 36
1.10.2 AT+CSCS.............................................................................................................................. 36
1.10.3 AT+CLCK............................................................................................................................. 36
1.10.4 AT+CPWD............................................................................................................................ 37
1.10.5 AT+CFUN............................................................................................................................. 38
1.10.6 AT+CPAS.............................................................................................................................. 39
1.11 STORING/RESTORING COMMANDS ............................................................................................ 39
1.11.1 AT&W................................................................................................................................... 39
1.11.2 AT&F .................................................................................................................................... 40
1.11.3 AT+CSAS.............................................................................................................................. 40
1.11.4 AT+CRES.............................................................................................................................. 40
1.12 ERROR MESSAGE HANDLING AND SURVEY................................................................................ 41
1.12.1 AT +CMEE............................................................................................................................ 41
1.12.2 Mobile equipment error result code : +CME ERROR: xxx...................................................... 41
1.12.3 Message service failure result code: +CMS ERROR :<err>.................................................... 42
1.12.4 AT +CEER............................................................................................................................. 45
1.12.5 Cause information element values from GSM recommendation 04.08 ..................................... 45
2A2-A / A2-B....................................................................................................47
2.1 TECHNICAL DATA.................................................................................................................... 47
2.2 POSSIBLE EXTERNAL DEVICES:................................................................................................. 48
2.3 CONNECTORS AT THE A2......................................................................................................... 49
2.4 PIN-OUT OF THE A2 MODULE .................................................................................................. 50
2.5 SPECIAL FUNCTIONALITY PINS ................................................................................................. 50
2.5.1 Pin 29 on C1, Pin 3 on C2 (SOFT ON/OFF) ........................................................................... 50
2.5.2 Pin 26 on C1 (RSTF).............................................................................................................. 51
2.5.3 Pin 5 on C2 (BRSF)................................................................................................................ 51
2.6 FIRMWARE DOWNLOAD PROCEDURE ....................................................................................... 51
3A2-1 MODULE..............................................................................................53
3.1 TECHNICAL DATA................................................................................................................... 53
3.2 CONNECTORS AT THE A2-1...................................................................................................... 54
3.3 FUNCTIONAL DESCRIPTION ...................................................................................................... 55
3.3.1 Ignition line............................................................................................................................ 55
3.3.2 Serial handling ....................................................................................................................... 55
3.3.3 Reset configuration................................................................................................................. 56
3.3.4 Firmware update..................................................................................................................... 56
4EVALUATION BOARD...............................................................................57
4.1 TECHNICAL DATA.................................................................................................................... 57
4.2 CONNECTORS AND UNITS ON THE EVALUATION BOARD ............................................................. 57
4.3 EVALUATION BOARD AND ACCESSORIES................................................................................... 58
4.4 FUNCTIONAL OVERVIEW.......................................................................................................... 58
4.5 USER MMI DESCRIPTION......................................................................................................... 58
4.5.1 Make it work.......................................................................................................................... 58
4.5.2 Keypad overview.................................................................................................................... 59
4.5.3 Display overview.................................................................................................................... 59
4.5.4 SIM card issues...................................................................................................................... 60
4.5.5 Switching ON/OFF the Phone................................................................................................. 60
4.5.6 Basic MMI functions.............................................................................................................. 61
4.5.7 Other useful Functions............................................................................................................ 62
4.5.7.1 Call Forwarding ....................................................................................................................................62
4.5.7.2 Call Barring...........................................................................................................................................62
4.5.8 Menu Functions...................................................................................................................... 63
4.5.8.1 Phone Bk (PHONE BOOK) ....................................................................................................................64
4.5.8.2 Text MSG (Short Message Service) .........................................................................................................68
4.5.8.3 CALL INFO ...........................................................................................................................................70
4.5.8.4 Networks................................................................................................................................................71

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Page 3
4.5.8.5 Call Setup..............................................................................................................................................71
4.5.8.6 Phn Setup...............................................................................................................................................72
4.5.9 Using the Menu key during a call............................................................................................ 74
4.5.9.1 Security..................................................................................................................................................74
4.5.9.2 In the case one call is active ...................................................................................................................74
4.5.9.3 In the case two calls are active ...............................................................................................................75
4.5.9.4 Call Waiting...........................................................................................................................................76
5FALCOM A2 TEST SOFTWARE................................................................77
5.1 OVERVIEW.............................................................................................................................. 77
5.2 FALCOM.INI ........................................................................................................................ 77
5.3 FALCOM.EXE...................................................................................................................... 77
5.3.1 Voice-CALL and SMS – CALL............................................................................................. 78
5.3.2 Options .................................................................................................................................. 79
5.3.3 Info........................................................................................................................................ 79
5.3.4 Test software appendix........................................................................................................... 79
6APPENDIX ....................................................................................................84
6.1 RECOMMENDATION FOR POWER SUPPLY LAYOUT...................................................................... 84
6.2 A2 PIN DESCRIPTION................................................................................................................ 84

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Page 4
0Introduction
This manual is focussed on the GSM data solutions of the FALCOM A2
series from Funkanlagen Leipoldt OHG. It contains information about the
FALCOM A2 embedded GSM module, the FALCOM A2-1 GSM modem
and phone and the A2 evaluation board. It does not contain special
information about the GSM related accessories, as there are the dial-
handset, the hands free set, the external battery pack and the mobile data
terminals, which are also produced at Funkanlagen Leipoldt OHG.
Information furnished herein by Funkanlagen Leipoldt OHG is
believed to be accurate and reliable. However, no responsibility is
assumed for its use. Also the information contained herein is subject to
change without notice.
Users are advised to quickly proceed to the “Security” chapter and read
the hints carefully.
0.1 Used abbreviations
ETSI European Telecommunications Standards Institute
GSM Global System for Mobile communications
IMEI International Mobile station Equipment Identity
ME Mobile Equipment
PLMN Public Land Mobile Network
PIN Personal Identification Number
PUK Personal Unblocking Key
RP Receive Protocol
RXQUAL Received Signal Quality
SIM Subscriber Identity Module
SMS Short Message Service
SMS/PP Short Message Service/Point-to-Point
TA Terminal Adapter
TE Terminal Equipment
TP Transmit Protocol
0.2 Related documents
•ETSI GSM 07.05 “Use of Data Terminal Equipment – Data Circuit
terminating Equipment interface for Short Message Service and Cell
Broadcast Service“
•ETSI GSM 07.07 “AT command set for GSM Mobile Equipment”
•ITU-T V.25ter “Serial asynchronous automatic dialling and
control”

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0.3 Security
IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF
YOUR GSM MODEM READ THIS INFORMATION BEFORE USE !
Your GSM modem is one of the most exciting and innovative electronic
products ever developed. With it you can stay in contact with your office,
your home, emergency services, and others, wherever service is
provided.
GENERAL
Your modem utilises the GSM standard for cellular technology. GSM is
a newer radio frequency (« RF ») technology than the current FM
technology that has been used for radio communications for decades. The
GSM standard has been established for use in the European community
and elsewhere.
Your modem is actually a low power radio transmitter and receiver. It
sends out and receives radio frequency energy. When you use your
modem, the cellular system handling your calls controls both the radio
frequency and the power level of your cellular modem.
EXPOSURE TO RF ENERGY
There has been some public concern about possible health effects of
using GSM modem. Although research on health effects from RF energy
has focused for many years on the current RF technology, scientists have
begun research regarding newer radio technologies, such as GSM. After
existing research had been reviewed, and after compliance to all
applicable safety standards had been tested, it has been concluded that
the product is fit for use.
If you are concerned about exposure to RF energy there are things you
can do to minimise exposure. Obviously, limiting the duration of your
calls will reduce your exposure to RF energy. In addition, you can reduce
RF exposure by operating your cellular modem efficiently by following
the below guidelines.
EFFICIENT MODEM OPERATION
For your modem to operate at the lowest power level, consistent with
satisfactory call quality :
If your modem has an extendible antenna, extend it fully. Some models
allow you to place a call with the antenna retracted. However your
modem operates more efficiently with the antenna fully extended.
Do not hold the antenna when the modem is « IN USE ». Holding the
antenna affects call quality and may cause the modem to operate at a
higher power level than needed.

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ANTENNA CARE AND REPLACEMENT
Do not use the modem with a damaged antenna. If a damaged antenna
comes into contact with the skin, a minor burn may result. Replace a
damaged antenna immediately. Consult your manual to see if you may
change the antenna yourself. If so, use only a manufacturer-approved
antenna. Otherwise, have your antenna repaired by a qualified technician.
Use only the supplied or approved antenna. Unauthorised antennas,
modifications or attachments could damage the modem and may
contravene local RF emission regulations or invalidate type approval.
DRIVING
Check the laws and regulations on the use of cellular devices in the area
where you drive. Always obey them. Also, when using your modem
while driving, please : give full attention to driving, pull off the road and
park before making or answering a call if driving conditions so require.
ELECTRONIC DEVICES
Most electronic equipment, for example in hospitals and motor vehicles
is shielded from RF energy. However RF energy may affect some
malfunctioning or improperly shielded electronic equipment.
VEHICLE ELECTRONIC EQUIPMENT
Check your vehicle manufacturer’s representative to determine if any on
board electronic equipment is adequately shielded from RF energy.
MEDICAL ELECTRONIC EQUIPMENT
Consult the manufacturer of any personal medical devices (such as
pacemakers, hearing aids, etc...) to determine if they are adequately
shielded from external RF energy.
Turn your modem OFF in health care facilities when any regulations
posted in the area instruct you to do so. Hospitals or health care facilities
may be using RF monitoring equipment.
AIRCRAFT
Turn your modem OFF before boarding any aircraft.
Use it on the ground only with crew permission.
Do not use in the air.
To prevent possible interference with aircraft systems, Federal Aviation
Administration (FAA) regulations require you to have permission from a
crew member to use your modem while the plane is on the ground. To
prevent interference with cellular systems, local RF regulations prohibit
using your modem whilst airborne.

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CHILDREN
Do not allow children to play with your modem. It is not a toy. Children
could hurt themselves or others (by poking themselves or others in the
eye with the antenna, for example). Children could damage the modem,
or make calls that increase your modem bills.
BLASTING AREAS
To avoid interfering with blasting operations, turn your unit OFF when
in a « blasting area » or in areas posted : « turn off two-way radio ».
Construction crew often use remote control RF devices to set off
explosives.
POTENTIALLY EXPLOSIVE ATMOSPHERES
Turn your modem OFF when in any area with a potentially explosive
atmosphere. It is rare, but your modem or its accessories could generate
sparks. Sparks in such areas could cause an explosion or fire resulting in
bodily injury or even death.
Areas with a potentially explosive atmosphere are often, but not always,
clearly marked. They include fuelling areas such as petrol stations ;
below decks on boats ; fuel or chemical transfer or storage facilities ; and
areas where the air contains chemicals or particles, such as grain, dust, or
metal powders.
Do not transport or store flammable gas, liquid, or explosives, in the
compartment of your vehicle which contains your modem or accessories.
Before using your modem in a vehicle powered by liquefied petroleum
gas (such as propane or butane) ensure that the vehicle complies with the
relevant fire and safety regulations of the country in which the vehicle is
to be used.
0.4 SAFETY STANDARDS
THIS CELLULAR MODEM COMPLIES WITH ALL APPLICABLE
RF SAFETY STANDARDS.
This cellular modem meets the standards and recommendations for the
protection of public exposure to RF electromagnetic energy established
by governmental bodies and other qualified organisations, such as the
following :
Directives of the European Community, Directorate General V in Matters
of Radio Frequency Electromagnetic Energy.

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1GSM 07.05 and 07.07 commands
1.1 Preface
In the following the <err> parameter is sometimes shown. This parameter
and its possible values are described in chapter “ Error message handling
and survey”.
1.2 Commands concerning modem hardware
1.2.1 AT+CGMI
Command gives manufacturer information.
Command Possible responses
+CGMI Funkanlagen Leipoldt OHG
+CGMI=? OK
Remarks: none
Source: GSM 07.07/5.1
Implementation: not yet complete
1.2.2 AT+CGMM
Command gives GSM model information.
Command Possible responses
+CGMM GSM 900 Phone Falcom A2
+CGMM=? OK
Remarks: none
Source: GSM 07.07/5.2
Implementation: not yet complete
1.2.3 AT+CGMR
Command gives firmware revision information.
Command Possible responses
+CGMR 01.5f.01
+CGMR=? OK
Remarks: none
Source: GSM 07.07/5.3
Implementation: not yet complete

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1.2.4 AT+CGSN
Command gives IMEI information.
Command Possible responses
+CGSN 500002010000000
+CGSN=? OK
Remarks: none
Source: GSM 07.07/5.4
Implementation: not yet complete
1.3 Network registration commands
1.3.1 AT+CPIN
Command is used to send the PIN to the modem, which is needed to register
into the GSM network.
After three unsuccessful attempts to enter the PIN the PUK is required. As
second parameter the user should provide a new PIN.
Command Possible responses
+CPIN=<pin> OK +CME ERROR: <err>
+CPIN=<puk>,<new pin> OK +CME ERROR: <err>
+CPIN? +CPIN: <code> +CME ERROR: <err>
+CPIN=? OK
Defined values:
<pin>, <newpin>: 4 to 8 digits string type value
<puk>: 8 digits string type value
<code>: READY Modem is not pending for any
password
SIM PIN Modem is waiting SIM PIN to be
given
SIM PUK Modem is waiting SIM PUK to be
given
Remarks: CME ERROR: 13 shows up after 10 unsuccess-
ful attempts to enter the
PUK. SIM card is damaged
then.
CME ERROR: 10 means that no SIM card is
inserted.
Source: GSM 07.07/8.3
Implementation: yes

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1.3.2 AT+CREG
Command is used to show the network registration status and to control the
presentation of an unsolicited result code +CREG: <stat> when there is a
change in the network registration status.
Command Possible responses
+CREG=[<n>] OK
+CREG? +CREG: <n>,<stat> +CME ERROR: <err>
+CREG=? +CREG: (list of
supported <n>s) +CME ERROR: <err>
Defined values:
<n>: 0disable network registration unsolicited
result code
1enable network registration unsolicited
result code
<stat>: 0not registered, ME is not currently
searching a new operator to register to
1registered, home network
2not registered, but ME is currently
searching a new operator to register to
3registration denied
4unknown
5registered, roaming
Remarks: none
Source: GSM 07.07/7.2
Implementation: yes
1.3.3 AT+COPS
Command is used to show the current and the available PLMN’s. It is also
used to select a PLMN manually or automatically.
Command Possible responses
+COPS=[<mode>
[,<format>[,<oper>]]] OK +CME ERROR: <err>
+COPS? +COPS: <mode>[,<format>,<oper>] +CME ERROR: <err>
+COPS=? +COPS: list of
supported(<stat>,
numeric oper>)s
+CME ERROR: <err>
Defined values:
<mode>: 0automatic (<oper> field is ignored)
1manual (<oper> field shall be present)

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<format>: 2numeric <oper>
<oper>: string type; GSM Location Area Identification
number which consists of a three BCD digit
country code coded as in ITU-T E.212 annex A
[10], plus a two BCD digit network code, which is
administration specific
<stat>: 0unknown
1available
2current
3forbidden
Remarks: none
Source: GSM 07.07/7.3
Implementation: yes
1.3.4 AT+CSQ
Command is used to ask for the networks field strength and the current bit
error rate.
Command Possible responses
+CSQ +CSQ: <rssi>,<ber> +CME ERROR: <err>
+CSQ=? +CSQ: (list of supported <rssi>s),(list of
supported <ber>s)
Defined values:
<rssi>: 0-113 dBm or less
1-111 dBm
2...30 -109... -53 dBm
31 –51 dBm or greater
99 not known or not detectable
<ber> (in percent): 0...7 as RXQUAL values in the table in GSM
05.08 [20] subclause 8.2.4
99 not known or not detectable
Remarks: none
Source: GSM 07.07/8.5
Implementation: yes

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1.4 Call control commands
1.4.1 ATD;
Command is used to establish a voice call, if the semicolon at the end of the
number is applied.
Command Possible responses
ATD<number>; OK If call is established
BUSY If called party is in another call
NO ANSWER If called party does not accept a call
NO CARRIER If there are problems to establish a call
Defined values:
<number>: telephone number to dial.
Remarks: In case of international number, the local
international prefix (usually 00) could be replaced
by the '+' character.
For phonebook dialling please see phonebook
commands section.
Source: GSM 07.07/V.25ter/6.3.1
Implementation: yes
1.4.2 ATD
Command is used to establish a data call.
Command Possible responses
ATD<number> CONNECT<speed> If call is established
BUSY If called party is in another call
NO ANSWER If called party does not accept a call
NO CARRIER If there are problems to establish a call
Defined values:
<speed>: link baud rate between modem and network
Remarks: Bearer type should be selected before (see at+cbst).
For phonebook dialling please see phonebook
commands section.
Source: GSM 07.07/V.25ter/6.3.1
Implementation: yes

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1.4.3 ATA
Command is used to accept an incoming call.
Command Possible responses
ATA OK If incoming call is a voice call
CONNECT <speed> If incoming call is a data call ERROR
Defined values:
<speed> see ATD command.
Remarks: User should not use command, if ATS0 does not
equals zero.
Source: GSM 07.07/V.25ter/6.3.5
Implementation: yes
1.4.4 ATH
Command is used to end a call.
Command Possible responses
ATH NO CARRIER ERROR
Remarks: none
Source: GSM 07.07/V.25ter/6.3.6
Implementation: yes
1.4.5 AT+VGR
Command is used to set the amplification of the modules microphone.
Command Possible responses
AT+VGR=<n> OK
AT+VGR? +VGR: <n>
AT+VGR=? (list of supported <n>s)
Defined values:
<n> An integer <n>, range 0...255. Values larger than
128 indicate a larger gain than nominal. Values
less than 128 indicate a smaller gain than nominal..
Remarks: none
Source: GSM 07.07/C.4
Implementation: not yet complete

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1.4.6 AT+VGT
Command is used to set the amplification of the modules loudspeaker.
Command Possible responses
AT+VGT=<n> OK
AT+VGT? +VGT: <n>
AT+VGT=? (list of supported <n>s)
Defined values:
<n> An integer <n>, range 0...255. Values larger than
128 indicate a larger gain than nominal. Values
less than 128 indicate a smaller gain than nominal..
Remarks: none
Source: GSM 07.07/C.5
Implementation: not yet complete
1.4.7 AT+VTS
Command is used to transmit DTMF tones.
Command Possible responses
AT+VTS=<tone> OK
AT+VTS=? (list of supported <tone>s)
Defined values:
<tone> A single ASCII character in the set 0-9, #,*,A-D.
Remarks: In GSM this operates only in voice mode.
Source: GSM 07.07/C.11
Implementation: not yet complete
1.4.8 AT+VTD
Command is used to set the length of DTMF tones emitted.
Command Possible responses
AT+VTD=<n> OK
AT+VTD? +VTD: <n>
AT+VTD=? (list of supported <n>s)
Defined values:
<n> tone of duration <n>/10 seconds.
Remarks: none
Source: GSM 07.07/C.12
Implementation: yes

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1.4.9 +++
Sequence is used to switch from on-line data mode to on-line command
mode while in a data call.
Command Possible responses
+++ OK
Remarks: No <CR> is needed after the sequence.
Source: Manufacturer defined
Implementation: yes
1.4.10 ATO
Command is used to switch back from on-line command mode to on-line
command data while in a data call.
Command Possible responses
ATO CONNECT <speed> ERROR
Remarks: none
Source: GSM 07.07/V.25ter/6.3.7
Implementation: yes
1.4.11 AT+CBST
Command is used to select the bearer service type and the transparent or
non-transparent mode for a data connection.
Command Possible responses
+CBST=[<speed>,0,[,<ce>]] OK
AT+CBST? +CBST=<speed>,0,<ce>
AT+CBST=? +CBST: (list of supported <speed>s),0,(list of
supported <ce>s)
Defined values:
<speed>: 0autobauding (automatic selection of the
speed)
1300 bps (V.21)
21200 bps (V.22)
42400 bps (V.22bis)
64800 bps (V.32)
79600 bps (V.32)
65 300 bps (V.110)
66 1200 bps (V.110)
68 2400 bps (V.110)
70 4800 bps (V.110)
71 9600 bps (V.110)

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<ce>: 0transparent
1non-transparent
Remarks: none
Source: GSM 07.07/6.7
Implementation: not yet complete
1.4.12 Remote disconnection
When the called party has ended a call the modem shows the final result
code NO CARRIER.
1.5 Call information commands
1.5.1 AT+CR
Command controls whether or not intermediate result code +CR: <serv> is
returned from the modem during connect negotiation of a data call.
Command Possible responses
+CR=[<mode>] OK
AT+CR? +CR=<mode>
AT+CR=? +CR: (list of <modes>s)
Defined values:
<mode>: 0disables reporting
1enables reporting
<serv>: ASYNC asynchronous transparent
REL ASYNC asynchronous non-transparent
Remarks: none
Source: GSM 07.07/6.9
Implementation: yes
1.5.2 AT+CRC
Command controls whether or not the normal RING message of an
incoming call is replaced by an extended call indication using unsolicited
result code +CRING: <type>.
Command Possible responses
+CRC=[<mode>] OK
AT+CR? +CR=<mode>
AT+CR=? +CR: (list of <modes>s)

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Defined values:
<mode>: 0disables reporting
1enables reporting
<type>: ASYNC asynchronous transparent
REL ASYNC asynchronous non-transparent
VOICE normal voice
Remarks: none
Source: GSM 07.07/6.11
Implementation: yes
1.6 Call setting commands
1.6.1 ATS0
Command will be documented soon.
1.6.2 AT+CCFC
Command is used to set the call forwarding service.
Command Possible responses
+CCFC=<reason>,<mode>
[,<number>] OK
When <mode>=2:
+CCFC: <status>,<class>
+CME ERROR: <err>
AT+CCFC=? +CCFC: (list of supported <reason>s)
Defined values:
<reason>: 0unconditional
1mobile busy
2no reply
3not reachable
4all call forwarding
5all conditional call forwarding
<mode>: 0disable
1enable
2query status
3registration
4erasure
<number>: telephone number to forward to

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Page 18
<class> is a sum of integers each representing a class of
information (default 7 equals to all classes):
1voice
2data
4fax
<status>: 0not active
1active
Remarks: none
Source: GSM 07.07/7.10
Implementation: not yet complete
1.6.3 AT+CCWA
Command is used to set the call waiting supplementary service.
Command Possible responses
+CCWA=[<n>[,<mode>
[,<class>]]] OK
When <mode>=2:
+CCWA: <status>,<class>
+CME ERROR: <err>
AT+CCWA? +CCWA=<n>
AT+CCWA=? +CCWA: (list of <n>s)
Defined values:
<n> (sets/shows the result code presentation status):
0disable
1enable
<mode> (when <mode> parameter is not given, network is
not interrogated):
0disable
1enable
2query status
<class> is a sum of integers each representing a class of
information (default 7 equals to all classes):
1voice
2data
4Fax
<status>: 0not active
1active
Remarks: not yet complete
Source: GSM 07.07/7.11
Implementation: yes

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Page 19
1.6.4 AT+CLIP
Command is used to set and request the status of the calling line
identification presentation service. Depending on the setting the number of
the calling party will be shown as result code +CLIP: <number>,<type> on
incoming calls (after every RING).
Command Possible responses
+CLIP=[<n>] OK
AT+CLIP? +CLIP=<n>,<m>
AT+CLIP=? +CLIP: (list of supported <n>s)
Defined values:
<n> (parameter sets/shows the result code presentation
status):
0disable
1enable
<m> (parameter shows the subscriber CLIP service
status in the network):
0CLIP not provisioned
1CLIP provisioned
2unknown (e.g. no network, etc.)
<number>: string type phone number of format specified by
<type>.
<type>: type of address octet in integer format.
Remarks: none
Source: GSM 07.07/7.6
Implementation: yes
1.6.5 AT+CLIR
Command is used to set and request the status of the calling line
identification restriction service. Depending on the setting the own number
is presented to the called party or not.
Command Possible responses
+CLIR=[<n>] OK
AT+CLIR? +CLIR=<n>,<m>
AT+CLIR=? +CLIR: (list of supported <n>s)