Specifications

AT Command Set for L55 Platform 2003-11-21
Copyright  Siemens AG 2003 All Rights Reserved Page 69 of 131
2.3.10 Modem commands
This section provides the descriptions of modem commands.
2.3.10.1 AT+CBST
AT+CBST Select bearer service type
Selects the bearer service <name> with data rate <speed> and the
connection element <ce> to be used when data calls are originated.
Test command
AT+ CBST =?
Response
+CBST: (list of supported <speed>s), (list of supported <name>s), (list of
supported <ce>s)
OK
Parameter
<speed>
0 auto bauding
4 2400 bps ( V.22bis)
6 4800 bps ( V.32)
7 9600 bps (V.32)
14 14400 bps (V.34)
68 2400 bps (V.110)
70 4800 bps (V.110)
71 9600 bps (V.110)
75 14400 bps (V.110)
<name> 0 asynchronous modem
<ce> 1 non-transparent
Read command
AT+ CBST?
Response
+CBST: <speed>,<name>,<ce>
OK
Write command
AT+ CBST=<speed>[,0,1]
Parameter
<speed>
See Test command
Response
OK