Siemens M1 - Manual (Page 51)

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gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Technical reference section
26.2.96
This command selects the bearer service with data rate and the connection element
to be used when data calls are originated.
AT+CBST - Select bearer service type
AT+CBST
Command Result
AT+CBST=[<speed>
[,<name>[,<ce>]]] Selects new speed, name and ce
AT+CBST? Displays speed, name and ce
AT+CBST=? Displays list of supported speed, list of supported
name and list of supported ce (Connection Ele-
ments)
<speed n> n=[0,4,6,7,68,70,71]
0 autobauding
4 2400 bps (V.22bis)
6 4800 bps (V.32)
7 9600 bps (V.32)
68 2400 bps (V.110)
70 4800 bps (V.110)
71 9600 bps (V.110)
<name n> n=[0]
0 asynchronous modem
<ce n> n=[0]
0 transparent