User Manual

PAGE 44 GPRS / GSM MODEM Configuration MAN4005-04-EN
2. AT+CBST Select Bearer service type
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
Group
Call Control
Command Format Query
Response
AT+CBST=?
+CBST: (0-7, 12, 14, 65, 66, 68, 70, 71,75),
(0-1), (0-3)
Write Format
Response
AT+CBST=<baud rate>,<name>,<ce>
OK/ERROR
Read Format
Response
AT+CBST?
+CBST: 7,0,1
Execution Format
Response
N/A
N/A
Parameter Values
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)
66 1200 bps (V.110)
68 2400 bps (V.110 or X.31 flag stuffing)
70 4800 bps (V.110 or X.31 flag stuffing)
71 9600 bps (V.110 or X.31 flag stuffing)
<baud rate>
75 14400 bps (V.110 or X.31 flag stuffing)
<name> 0 none
0 transparent
1 non-transparent
2 both, transparent preferred
<ce>
3 both, non-transparent preferred
Example
Page 44 of 62 ECN # 956