Motorola L-series GSM modem AT commands

I think most of the information below is correct, but try it for yourself before relying on it. I assembled it for my own purposes not as a reliable source of information. Please advise of any corrections or additions.
A/ Repeat last command
A Answer incoming data call
Bn n=0 - Select V.22 connection at 1200 baud
n=1 - Select Bell 212A connection at 1200 baud
Compatibility only - no action
C1 Return OK message Compatibility only - no action
Dn Dial number n
En n=0 Turn command echo off
n=1 Turn command echo on
 
Factory default
Fn Select line modulation standard n
n=0 - Automatic
n=1 - V.21/Bell 102
n=2 - not used
n=3 - V.23
n=4 - V.22/Bell 212A 1200 baud
n=5 - V.22bis
n=6 - V.32 or B.32bis 4800 baud
n=7 - V.32 7200 baud
n=8 V.32 or B.32bis 9600 baud
n=9 V.32bis 12000 baud
n=10 V.32bis 14400 baud
Hn n=0 Hang up
n=1 Go off hook in command mode
 
Compatibility only - no action
In Request modem information
n=0 model
n=1 ROM checksum
n=2 Compute checksum; report status
n=3 Firmware level
n=4 OEM specific
n=5 Country code
n=6 Data mode ("Ruby II" for GSM)
Ln Speaker volume to level n
n=0 low
n=1 low
n=2 low
n=3 low (default)
Compatibility only - no action (Default=1)
Mn Speaker status control set to n
n=0 Off
n=1 On during handshaking only
n=2 On
n=3 On during answering only
Default = 1
Nn Select automode detection
n=0 - Off
n=1 - On Turn on automode detection
O0 Go on-line
P Pulse dialling Compatibility only - no action
Qn n=0 Result codes to DTE off
n=1 Result codes to DTE on
Factory default
 
Sn Select S-Register n as default
Sn? Return the value of S-Register n
=v Set default S-Register to value v
? Return the value of default S-Register
T Force DTMF dialling
Vn n=0 Verbose response messages off
n=1 Verbose response messages on
Wn Report line speed details at level n
n=0 DTE speed
n=1 all information
n=2 DCE speed
Xn Call progress reports level n
n=0 Basic only (OK, CONNECT, RING, NO CARRIER, NO ANSWER, ERROR)
n=1 as for 0, and SPEED nnnn
n=2 as for 1, and BUSY
n=3 as for 1 plus DIAL TONE
n=4 as for 1 plus BUSY and DIAL TONE
Default = 4
Yn Set handling of long space disconnect before on-hook
n=0 Disnable
n=1 Enable
Zn Restore stored profile n after warm reset
(may not reset out of Fax mode - try AT+FCLASS=0)
&Cn n=0 set RLSD active regardless of carrier state
n=1 set RLSD to follow carrier state
&Dn n=0 Ignore DTR action if DTR (set by DTE) drops
n=1 Switch to on-line command mode
n=2 Disconnect and switch to on-line command mode
&Fn Restore factory configuration n
n= 1 or 2
&Gn n=0 Disable guard tone
n=1 Enable 1800 Hz guard tone
&Jn Set S-Register response only for compatibility
&Kn Set DTE/DCE flow control type n
n=0 - disable flow control
n=3 - enable CTS/RTS flow control
n=4 - enable xon/xoff flow control
n=6 - enable CTS/RTS and xon/xoff flow control
&Ln Line operation mode n
n=0 - dial-up
n=1 - leased line
&M0 Select direct asynchronous mode
&Qn n=0 Select direct asynchronous mode
n=5 Modem negotiates an error corrected link
n=6 Select asynchronous operation in normal mode
&Rn n=0 - CTS tracks RTS (asynchronous) or acts per V.25
n=1 - CTS always active
&Sn n=0 - DSR always active
n=1 - DSR acts per V.25
&Tn Configure self test mode n
n=0 - terminate test in progress
n=1 - local analog loopback without self test
n=2 - return error
n=3 - local digital loopback
n=4 - allow remote digital loopback (RDL)
n=5 - disallow RDL request
n=6 - request RDL without self test
n=7 - request RDL with self test
n=8 - local analog loopback with self test
&V Display current configuration
&Wn Store the active profile in NVRAM profile n
&Xn Select timing n for the transit clock
n=0 internal
n=1 external
n=2 slave receive
&Yn Recall stored profile n upon power up
&Zn=string Store dial string to location n (0 to 3)
string maximum length = 35
%En Set line quality monitor and retrain
n=0 - Disable
n=1 - Enable line quality monitor and auto retrain
n=2 - Enable line quality monitor and fallback/fall forward
\Kn Set break handling mode n Compatibility only
\Nn Set transmission mode n
n=0 - normal speed buffered
n=1 - direct
n=2 - reliable
n=3 - auto reliable
n=4 - LAPM
n=5 - MNP
+CBST=str Set bearer service type
str=? - report acceptable setting ranges
str=n,0,1 - set speed to n
n=0 - Auto selection
n=1 - ???
n=2 - ???
n=4 - 2400bps V22bis
n=5 - ???
n=6 - 4800bps V32
n=7 - 9600bps V32
n=12 - ???
n=14 - 14.4kbps V32
n=65 - ???
n=66 - ???
n=68 - 2400bps V110 (ISDN)
n=70 - 4800bps V110 (ISDN)
n=71 - 9600bps V110 (ISDN)
n=75 - 14.4kbps V110 (ISDN)
+CMGFstr SMS message format
str=0 - Set PDU format
str=  =? - return allowable formats
str=? - return current format
+CMGL List SMS messages
+CMGR=n Read SMS message n
+CMGW=n
<PDU string><Ctrl-Z>
Write SMS Message to memory
length in octets of PDU string = n
+CMSS=n Send stored SMS message n to network
+CPMS? Return current preferred SMS message storage
+CSCA=str SMS Service Centre Address
str=? - return current settings
str= =? - test command
str=n - set centre number to n
+CSMS? Return selected message service
+FCLASS=n Set FAX class n
n=0 - disable fax mode
n=1 - fax class 1 service
n=2 - fax class 2 service

i.e. data call
 
not supported?

Last modified 13 April 2002

Assembled by Dave Davey daved@physiol.usyd.edu.au

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