AC75 AT Command Set
7.19 AT+CBST s
AC75_ATC_V01.002 Page 177 of 569 10/30/06
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7.19 AT+CBST Select bearer service type
The AT+CBST write command selects the bearer service <name>, the data rate <speed> and the connection
element <ce> to be used when data calls are originated. The settings also apply to mobile terminated data calls,
especially when single numbering scheme calls or calls from analog devices are received (see AT+CSNS). See
GSM 02.02[1] for a list of allowed combinations of subparameters.
Syntax
Parameter Description
0 Autobauding
1 300 bps (V.21)
2 1200 bps (V.22)
4 2400 bps (V.22bis)
6 4800 bps (V.32)
[7](&F) 9600 bps (V.32)
14 14400 bps (V.34)
65 300 bps (V.110)
66 1200 bps (V.110)
68 2400 bps (V.110)
70 4800 bps (V.110)
71 9600 bps (V.110)
75 14400 bps (V.110)
0(&F) Asynchronous modem
Test Command
AT+CBST=?
Response(s)
+CBST: (list of supported<speed>s), (list of supported<name>s), (list of supported<ce>s)
OK
Read Command
AT+CBST?
Response(s)
+CBST: <speed>, <name>, <ce>
OK
Write Command
AT+CBST=<speed>[, <name>[, <ce>]]
Response(s)
OK
ERROR
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4Last
GSM 07.07 - + - + + - - - + -
<speed>(num)(&W)(&V)
<name>(num)(&W)