Atbn - Select Gsm Module's Operating Mode - Siemens M1 User Manual

Technical reference section
Example:
Your PC is set to 19200 baud, i.e. higher than the maximum GSM transfer rate of 9600
bit/s. This means that the GSM module receives more data from the PC than it can
transfer to the GSM network. In order to prevent a data overflow, the module must be
able to interrupt the data flow from the PC. This is accomplished by means of the RTS/
CTS hardware data flow control.

ATBn - Select GSM module's operating mode

The ATBn command also allows you to set the GSM module's operating mode perma-
nently for all connections.
ATBn
Option
Bit/s
ATB99
ATB 7 2400
ATB11 4800
ATB13 9600
ATB25 2400
ATB27 4800
ATB29 9600
ATB70 9600
Example:
Enter:
GSM module:
Enter:
GSM module
Synchronism Distant station
Automatically sets the mode to match
the baud rate set for the PC.
Factory configuration
Asynchronous V.22bis
Asynchronous V.32
Asynchronous V.32
Asynchronous V.110 ISDN
Asynchronous V.110 ISDN
Asynchronous V.110 ISDN
Asynchronous Fax Group 3
ATB13
Permanently switches the mode to 9600 bit/s with the result that
all radio connections are permanently set to a transfer rate of
9600 bit/s.
ATB99
Automatically changes to the rate of the COM interface.
[n=7 ,11,13,25,27 ,29,70,99]
Result
21