Specifications

Telit GM862-PCS/-GPRS/-GSM Product Description

1vv0300604, Rev. ISSUE#14 - 22/01/04

6.5.2 Call control

6.5.2.1 +CBST - select bearer service type

+CBST – select bearer service type

Execute command

Read command

AT+CBST? Returns current value of the parameters <speed>,<name> and <ce>

Write command

AT+CBST = <speed>,

Selects the bearer service <name> with data rate <speed>, and the

connection element <ce> to be used when data calls are originated.

Values may also be used during mobile terminated data call setup,

especially in case of single numbering scheme calls (refer +CSNS).

Parameters:

The default values of the subparameters are manufacturer specific since

they depend on the purpose of the device and data services provided by

it. Not all combinations of these subparameters are supported. The

supported values are:

<speed>

0 – autobauding (automatic selection of the speed)

1 - 300 bps (V.21)

2 - 1200 bps (V.22)

3 - 1200/75 bps (V.23)

4 - 2400 bps (V.22bis)

6 - 4800 bps (V.32)

7 - 9600 bps (V.32)

14 - 14400 bps (V.34)

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)

75 - 14400 bps (V110 or X.31 flag stuffing)

<name>

0 - data circuit asynchronous

<ce>

0 – transparent

1 - non transparent

Default is +CBST = 7,0,1

Test command

AT+CBST=? Returns the supported range of values of the parameters.

Example

Reference GSM 07.07

SW release Version A