Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 20 Ver. 1.00 – 10/29/2008
2.1.2.6. AT+CBST Select Bearer service type
Command Function This command is used to select the bearer
service with data rate and the connection
element to be used when data calls are
originated.
Command Functional Call Control
Group
Command Format Query AT+CBST=?
Response +CBST: (0-7, 12, 14, 65, 66, 68, 70, 71,75),
(0-1), (0-3)
Write Format AT+CBST=<baud rate>,<name>,<ce>
Response OK/ERROR
Read Format AT+CBST?
Response +CBST: 7,0,1
Execution Format N/A
Response N/A
Parameter Values
<baud rate> 0 autobauding (automatic selection of
the speed; this setting is possible in
case of 3.1 kHz modem and non-
transparent service)
1 300 bps (V.21)
2 1200 bps (V.22)
3 1200/75 bps (V.23)
4 2400 bps (V.22bis)
5 2400 bps (V.26ter)
6 4800 bps (V.32)
7 9600 bps (V.32)
12 9600 bps (V.34)
14 14400 bps (V.32)
65 300 bps (V.110)