Zte MG2636 Installation manual

GSM Modules
AT Command Manual
For ZTE Corporation’s MG2636 Modules
Version: V1.4
ZTE Corporation

GSM Modules
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Copyright Statement
Copyright © 2010 by ZTE Corporation
All rights reserved.
No part of this publication may be excerpted, reproduced, translated or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without the prior written permission of ZTE
Corporation.
is the registered trademark of ZTE Corporation. All other trademarks appeared in this
manual are owned by the relevant companies.
ZTE Corporation reserves the right to make modifications on print errors or update specifications in this
manual without prior notice.
ZTE Corporation keeps the right to make the final explanation to this manual.

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With strong technical force, ZTE Corporation can provide CDMA/GPRS module customers with the
following all-around technical support:
1. Provide complete technical documentation;
2. Provide the development board used for R&D, test, production, after-sales, etc.;
3. Provide evaluations and technical diagnosis for principle diagram, PCB, test scenarios;
4. Provide test environment;
ZTE Corporation provides customers with onsite supports, and also you could get supports through
telephone, website, instant communication, E-mail, etc.
The module website module.ztemt.com.cn provides the relevant industry information and module technical
documentation. The authorized module customers could download the latest technical documentation for
our website. If you have more requirements, you could send an E-mail to [email protected]. You can
also call us at 0755-86140899 for more supports.

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Preface
Summary
This user manual applies to MG2636 modules. AT command set provided by ZTE modules not only covers
standard GSM voice and data applications, but adds some commands according to GSM specification and
some ZTE exclusive commands for users. Refer to the manual to help you understand AT command
operations of MG2636 modules.
Target Readers
System designing engineers
Hardware engineers
Software engineers
Test engineers
Update History
The update history records the descriptions of manual update every time. The latest version includes the
updates of all previous versions.
Version V1.4（2010-06-30）
It is the 4th time to release the document. See the updates below:
Modify 1.12 +CLIP
Modify 1.16 +CLCK
Modify 1.17 +CPWD
Modify 8.5 $MYNETWRITE
Modify 9.1 $MYNETCREATE
Version V1.3（2010-06-13）
It is the 4th time to formally release the document. See the updates below:
Modify 1.5 ATI
Modify 1.19 +IPR
Modify 3.1 +CPAS
Modify 4.3 +CNMI
Modify 5.1 +CPBS
Modify 5.3 +CPBW
Modify 7.1 $MYNETCON
Add 1.24 ESIMS
Add 1.25 +ESLP
Version V1.2（2010-06-09）
It is the 3rd time to release the document. See the updates below:
Modify 1.11 +CLVL

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Modify 2.1 +CREG
Modify 4.3 +CNMI
Modify 4.5 +CSMS
Modify 4.6 +CMGS
Modify 4.7 +CPMS
Modify 6.1 $MYNETCON
Modify 8.1 $MYNETCREATE
Version V1.1（2010-05-18）
It is the 2nd time to release the document. See the updates below:
Add 8.1 $MYNETCREATE
Modify 6.1 $MYNETCON
Modify 7.1 $MYNETSRV
Modify 7.2 $MYNETOPEN
Modify 7.3 $MYNETCLOSE
Modify 7.4 $MYNETREAD
Modify 7.5 $MYNETWRITE
Version V1.0（2010-04-15）
It is the 1st time to formally release the document.

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Contents
1. Common Commands ....................................................................7
1.1 ATA: Answer ...................................................................7
1.2 ATD: Dial .......................................................................7
1.3 ATE：Enable.................................................................... 7
1.4 ATH: Hang up ................................................................... 8
1.5 ATI: Indicate.....................................................................8
1.6 ATQ：Display returned value ...................................................... 8
1.7 +++: switch from data mode to command mode ...................................... 9
1.8 ATO: switch from command mode to data mode......................................9
1.9 ATS0: set auto answer............................................................ 9
1.10 +CRC: caller ringer type .........................................................9
1.11 +CLVL: caller volume level ......................................................10
1.12 +CLIP: caller ID presentation .................................................... 10
1.13 +CIMI: check international mobile identification ....................................11
1.14 +(C) GMR: get mobile revision...................................................11
1.15 +CGSN: get current IMEI ....................................................... 11
1.16 +CLCK: function lock........................................................... 11
1.17 +CPWD: change password...................................................... 12
1.18 +CGMI: check manufacturer’s information......................................... 13
1.19 +IPR: set module’s baud rate....................................................13
1.20 +CCFC: call forwarding conditions ...............................................13
1.21 +CCWA: call waiting ........................................................... 14
1.22 +CHLD: call held .............................................................. 15
1.23 +CMUT: Mute control........................................................... 16
1.24 ESIMS: check SIM card status...................................................17
1.25 +ESLP: set sleep mode......................................................... 17
2. Network Service Command ........................................................... 18
2.1 +CREG: network registration and roaming.......................................... 18
2.2 +COPS: network selection .......................................................18
3. Mobile Device Control and Status Report ...........................................20
3.1 +CPAS: check module’s status.................................................... 20
3.2 +CFUN: set module’s function .................................................... 20
3.3 +CMEE: mobile equipment errors ................................................. 20
3.4 +CPIN: input PIN ...............................................................21
3.5 +CSQ: check signal strength .....................................................21
3.6 +CCLK: clock management ......................................................22
4. SMS Service Command ...............................................................23
4.1 +CSCA: SMS center number .....................................................23
4.2 +CMGF: Set SMS mode .........................................................23
4.3 +CNMI: set new message indication...............................................23
4.4 +CMGR: read message.......................................................... 25
4.5 +CSMS: select SMS service...................................................... 26

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4.6 +CMGS: send message .........................................................26
4.7 +CPMS: preferred SMS memory..................................................27
4.8 +CMGD: delete messages .......................................................28
4.9 +CMGL：message list........................................................... 29
4.10 +CMSS: send messages saved in SIM card .......................................30
5. Phonebook Command .................................................................32
5.1 +CPBS: phonebook selection..................................................... 32
5.2 +CPBR: phonebook read ........................................................32
5.3 +CPBW：Phonebook write....................................................... 33
5.4 +CPBF: phonebook find .........................................................34
5.5 +CNUM: owner’s number ........................................................ 35
6. GPRS Command ...................................................................... 36
6.1 +CGDCONT: Set PDP format.....................................................36
6.2 +CGACT: activate and deactivate PDP............................................. 36
6.3 +CGATT: set GPRS service ......................................................36
6.4 +CGCLASS: GPRS device levels ................................................. 37
7. Public Transmitting Commands ......................................................38
7.1 $MYNETCON: set network connection initializing parameters ........................ 38
7.2 $MYTYPE: check module’s work mode and network type.............................40
8. Non Transparent Transmission Command ..............................................41
8.1 $MYNETSRV: set service parameters ............................................ 41
8.2 AT$MYNETOPEN: open service .................................................. 43
8.3 AT$MYNETCLOSE: close service................................................. 45
8.4 AT$MYNETREAD: read data ....................................................45
8.5 AT$MYNETWRITE: transmit data ................................................ 46
9. Transparent Transmission Command ..................................................48
9.1 AT$MYNETCREATE: open transparent transmission service ............................. 48

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1. Common Commands
1.1ATA: Answer
Description This command is used to answer a call.
Format ATA
RING Incoming callExample
ATA Answer a call
1.2 ATD: Dial
Description This command is used to dial, transmit data or send a fax.
Format ATD<string>;
ATD><mem><n>;
ATD><n>;
AT+CPBS="SM"
ATD13024540756; Select SIM card phonebook as the current phonebook
Search the number from SIM card
phonebook and dial it
AT+CPBS="SM"
ATD>2;
OK
Select SIM card phonebook as the current
phonebook
Dial the second number in the current
phonebook
Example
ATD>SM1; the first number in SIM card phonebook
Parameters <mem>:Phonebook
“SM”:SIM card phonebook
“LD”: Latest dial in phonebook
“MC”: Missed calls
“ME”: local phonebook
<n>:the nth option in phonebook.
<string>:the number of called party, e.g., *99#.
1.3 ATE：Enable
Description This command is used to enable the display on the terminal.
Format ATE<n>
Example ATE0
OK
OK
ATE0, do not display the input command on
the terminal

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ATE1
OK
ATE1
OK
ATE1, display the input command on the
terminal
Parameters <n>=0 disable echo display
<n>=1 enable echo display
1.4 ATH: Hang up
Description This command is used to hang up the call.
Format ATH
ATA
OK Answer the call
Example
ATH Hang up the call
1.5 ATI: Indicate
Description This command is used to indicate the manufacturer’s information of the module.
Format ATI
Example ATI
ZTE Mobile LTD
GSM/GPRS Mobile Station
Revision: 1.0
OK
indicate the manufacturer’s information of the
module
1.6 ATQ：Display returned value
Description This command is used to set whether or not display the returned value
Format ATQ<n>
ATQ0
OK
ATQ0
OK
Display the returned value on the terminalExample
ATQ1
OK
ATQ1ATQ1
Don’t display the returned value on the
terminal

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1.7 +++: switch from data mode to command mode
Description This command is used to switch from data mode to command mode.
Format +++
Example ATD*99#
CONNECT
+++
……
AT
OK
Dial to enter data mode
Switch from data mode to command mode
1.8 ATO: switch from command mode to data mode
Description This command is used to switch from command mode to data mode.
Format ATO
Example ATD*99#
CONNECT
+++
……
ATO
……
Dial to enter GPRS data connection
Switch from data mode to command mode
Switch from command mode to data mode.
1.9 ATS0: set auto answer
Description This command is used to control auto answer mode of the module.
Format ATS0=<value>
ATS0=2
OK Auto answer after ringing twice
ATS0？
2
OK
Check the current setting
Example
ATS0=0
OK Cancel auto answer
Parameter <value>: ringing times
1.10 +CRC: caller ringer type
Description This command is used to set the answer mode.
Format AT+CRC=num
Example AT+CRC=1
OK
+CRING：VOICE
RING prompts incoming call type
Use CRC command to set the caller ringer
type

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Parameter Num：
0：do not display the caller ringer type
1：display the caller ringer type
Descriptions of caller ringer type
-VOICE
-GPRS
-FAX
1.11 +CLVL: caller volume level
Description This command is used to set the volume level of the speaker.
Format AT+CLVL=<level>
Example AT+CLVL=6
OK Set the current volume level as 6
Parameter AT+CLVL?
+CLVL:6 Check the current volume level
<level> : 0～6, the smaller the number is, the smaller the volume is.
1.12 +CLIP: caller ID presentation
Description This command is used to set caller ID presentation. The default is turn off caller ID
presentation.
Format AT+CLIP=<mode>
+CLIP: <mode> of return from AT+CLIP？
+CLIP: <number>,<type>,<> presentation mode.
AT+CLIP=1
OK
RING:+CLIP: “130********”,129, “”，
0，“”,0
Turn on caller ID presentation.
Incoming call, number is 130********
Example
AT+CLIP=0
OK
RING
Turn off caller ID presentation
No prompt upon incoming call
Description <mode>：
0：Turn off caller ID presentation
1：Turn on caller ID presentation
<number>：incoming call number (need apply for the service)
<type>：129。

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1.13 +CIMI: check international mobile identification
Description This command is used to read SIM card’s international identification.
Format AT+CIMI
Example AT+CIMI
460030916875923
OK
Check CIMI
Return CIMI
1.14 +(C) GMR: get mobile revision
Description This command is used to get the current software revision.
Format AT+(C)GMR
AT+(C)GMR=?
OK No meaningExample
AT+(C)GMR
+(C)GMR: ***.bin Get current software revision
1.15 +CGSN: get current IMEI
Description This command is used to get current device’s IMEI.
Format AT+CGSN
Example AT+CGSN
355670010290001
OK
Return current IMEI
1.16 +CLCK: function lock
Description This command is used to lock the terminal or network function.
Format AT+CLCK=<fac>,<mode>[,<passwd>[,<class>]]
+CLCK:<status>
Example AT+CLCK=?
+CLCK:
("PF","SC","AO","OI","OX","AI","IR","AB","AG","AC","FD","PN","PU","PP","PC")
OK

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Parameter <fac>: "PF" lock the phone into the firstly inserted SIM card; "SC" SIM card;
"AO" all outgoing calls; "OI" Outgoing international calls; "AI" all incoming calls; "IR"
Incoming roaming; "AB" all services barring; "AG" barring of all outgoing calls; "AC"
barring of all incoming calls; "FD" Fixed dial; "PN" Personalized network; "PU"
Personalized sub network; "PP" Personalized provider;
PC" Personalized corporate.
<mode>：
0：unlock
1：lock
2：check status
<passwd>：password or operation code, string type “***”.
<class>：
1：voice call type
2：data service type
4：fax service type
7：All service types
<status>：
0：disable
1：enable
1.17 +CPWD: change password
Description This command is used to change the password.
Format AT+CPWD=<fac>,<passwd>,<newpasswd>
+CPWD:<fac,length>s
Example AT+CPWD=?
+CPWD:
("SC",8),("P2",8),("AO",4),
("OI",4),("OX",4),("AI",4),
("IR",4),("AB",4),("AG",4),
("AC",4)
AT+CPWD ="SC","1234","2345"
OK
Check command setting range
Return list of parameters
Change password SIM password
fac: "SC": SIM card; “P2”SIM PIN2;"AO" :all outgoing calls; "OI": outgoing
international calls; "OX": outgoing international calls except to home country; "AI":
All incoming calls; "IR": Incoming roaming; "AB" all services barring; "AG" barring
of all outgoing calls; "AC" barring of all incoming calls;
passwd: password or operation code, string type "***".
newpasswd: new password or operation code, string type "***".
length: fac supported password length.
Parameters

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1.18 +CGMI: check manufacturer’s information
Description This command is used to check the manufacturer’s information of the module.
Format AT＋CGMI
Example AT+CGMI
ZTE Mobile LTD
OK
check the manufacturer’s information of the
module
1.19 +IPR: set module’s baud rate
Description This command is used to set the module’s baud rate and auto save the current baud
rate.
Format AT+IPR=<baud rate>
AT+IPR?
+IPR: 115200
OK
Check the module’s current baud rate
AT+IPR=?
Check supported baud rate
Example
AT+IPR=115200
OK Set baud rate as 115200
Parameter Only EDGE or 3G platform support baud rate higher than 115200bps. Use AT&W to
save the settings. Otherwise, auto return with 115200bps after the module’s power
cut-off.
1.20 +CCFC: call forwarding conditions
Description This command is used to set call forwarding number and conditions.
Format AT+CCFC=<reason>,<mode>[,<number>
[，<type>[,<class>[,<subaddr>[,<saytype>[,time]]]]]]
If mode!=2, after settings return OK;
If mode=2, after settings return
+CCFC:<status>,<class>
Example AT+CCFC=?
+CCFC: (0,1,2,3,4,5)
OK
Check call forwarding number and
conditions.
Return reason range.

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<reason>：
0：unconditional
1：mobile device busy
2：No answer
3：Can’t be connected
4：All calls
5：all conditions
<mode>：
0：disabled
1：enabled
2：check status
3：register
4：delete
number: phone number
<type>：
145：international number
129：other number
<subaddr>：address of string type
<saytype>：128
<class>：
1：voice
2：data
4：fax
7：all types
Time：1..20..30 multiply 5s
<status>：
0：deactivate
1：activate
Remarks Need apply for relevant services.
1.21 +CCWA: call waiting
Description This command is used for call waiting.
Format AT+CCWA=[<n>] [,<mode> [,<class>]]
AT+CCWA=? List all supported <n>
+CCWA: (list of supported <n>s)
OK
Example
AT+CCWA? Read current <n>
+CCWA: <n>
OK

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AT+CCWA=[<n>]
[,<mode>
[,<class>]]
Call waiting setting
As mode!=2, if succeeded,
OK
As mode==2, return:
+CCWA:<status>,<class1>[<CR><LF>
+CCWA:<status>,<class2>[...]] OK
If operation error occurs:
+CME ERROR: <err>
If <n>=1, send call waiting result code:
+CCWA: <number>,<type>,<class>
[,<alpha>][,<CLI validity>]
Under the premise of call waiting activated,
in the process of call connection,
As the system terminates the call, actively
send the result code.
Parameter <n>
0：do not send the result code of call waiting;
1：send the result code of call waiting
<mode>
0：Deactivate call waiting;
1：call waiting;
2：check current status
<class> 1：voice call
<status> 0：deactivated；1: activated.
<number> call waiting number, designated by <type>
<type> <number> format
<alpha>,<CLI validity>见AT+CLIP
1.22 +CHLD: call held
Description This command is used to set call held and conference call.
Format AT+CHLD=[<n>]
AT+CHLD=? Check supported <n>
+CHLD: (list of supported <n>s )
OK
Example
AT+CHLD=[<n>] Set call held and conference call.
If settings succeed：
OK
If operation error:
+CME ERROR: <err>

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Parameter <n>：
0: release all held calls or set a waiting call as UDUB
1: Release all activated calls and receive a held or waiting call.
1X: Release call X
2: Hold all activated calls and receive another held or waiting call.
2X: hold all calls except for call X
3: Add the held call into the conference call
Remarks
1. This command is used for telecom service 11;
2. The range of X value:1~7
3. When there is both held call and waiting call, the process above should
be applied for the waiting call.
4. When releasing call, please firstly use AT+CHLD=1 to release the current
call, and use ATH to hang up the call.
5. Please refer to the method of conference call provided by the operator
when using AT+CHLD=3.
1.23 +CMUT: Mute control
Description This command is used for mute control. The command is used only during the
conversation.
Format AT+CMUT=<Mode>
AT+CMUT=？
+ CMUT:（0-1）
OK
Check the setting parameters
AT+ CMUT =1
OK MUTE ON
Example
AT+ CMUT =0
OK MUTE OFF
Description <Mode>：
0：MUTE ON
1：MUTE OFF

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1.24 ESIMS: check SIM card status
Format This command is used to check SIM card status.
Example AT+ESIMS？
Example AT+ ESIMS?
+ ESIMS: 0
OK
Check SIM card status
No SIM card
Parameter Status：
0：SIM card does not exist.
1：SIM card exists.
1.25 +ESLP: set sleep mode
Format This command is used to disable and enable sleep mode.
Example AT+ESLP=<mode>
AT+ ESLP =0
OK Disable sleep mode
AT+ ESLP =1
OK Enable sleep mode
Example
AT+ ESLP =?
+ ESLP: (0,1)
OK
Check status
Parameter <mode>
0：disable
1：enable

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2. Network Service Command
2.1 +CREG: network registration and roaming
Format This command is used to check the module’s network registration and roaming
status.
Example AT+CREG=<mode>
+CREG :<mode>,<stat> return code
AT+CREG=0
OK Disabled network registration and provide result code
AT+CREG?
+CREG: 0,1 Display the module’s registration status
Example
AT+CREG=？
+CREG: （0-2）
OK
Check status range
Parameter <mode>：
0 Disabled network registration and provide result code (default)
1 Enabled network registration and provide result code: +CREG: <stat>
2 Enabled network registration and provide the location information.
<stat>：
0: Not logged on the network yet, currently not searching for new operator
1: Already logged on the local network.
2: Not logged on the network, currently searching for the BS
4: unknown code
5: Already logged on the network, under roaming status
2.2 +COPS: network selection
Format This command is used for network selection.
Example AT+COPS=[<mode>[,<format>[,<oper>]]]
Example AT+COPS?
+COPS=<mode>[,<format>,<oper>]
OK
Return current network’s registration
mode and network
AT+COPS=[<mode>[,<format>[,<oper>]]]
OK Select and register network

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Parameter <mode>
0 auto select, omit <format> <oper>
1 manual select, need <format><oper>
3 not involve network registration, this command is used to set format only; at this
point, need <format>
4 manual/auto; If manual registration fails, auto register
<format>
0 format of long character <oper>
1 ormat of short character <oper>
2 number format <oper>
<format>:
0 long format alpha <oper>,up to 16 character
1 short <oper>, up to 8 character
2 numeric <oper> (MCC+MNC), default
<stat>
0 unknown
2 current registered network
3 forbidden registered network