MC55_ATC_V04.00 Page 145 of 475 3/17/06
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7.18 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
4 2400 bps (V.22bis)
6 4800 bps (V.32)
[7](&F) 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)
0(&F) Asynchronous modem
Transparent mode is not supported.
1(&F) Non-transparent
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 MUX1 MUX2 MUX3 Charge Last
GSM 07.07 ! % ! % ! ! ! ! !
<speed>(num)(&W)(&V)
<name>(num)(&W)
<ce>(num)(&W)