RS232 Multiplexer Feature
3-438 AT Commands Reference Manual Decembe r 31, 20 07

MUX UART Port Speed

Auto baud rate detection is disabled in the MUX. To set the UART baud rate, the G24 uses the

<port speed> parameter in +CMUX command. If the parameter is absent, the MUX uses the same

baud rate that was in PREMUX state.

+CMUX, MUX Startup Command

This command is used to enable/disable the GSM MUX multiplexing protocol stack. When the

G24 receives a valid +CMUX command, it returns OK and changes its state to MUX-Init. If the

parameters are left out, the default value is used.

Command
Type Syntax Response/Action Remarks
Set +CMUX=<mode>
[,<subset>[,<port_speed>
[,<N1>[,<T1>[,<N2>[,<T
2>[,<T3>[,<k>]]]]]]]]
+CME ERROR: <err> The Set command
requests the G24 to
open the MUX stack
with various
parameters. This
command works only
in PREMUX state.
Read +CMUX? +CMUX: <mode>, [<subset>],
<port_speed>,<N1>, <T1>, <N2>,
<T2>, <T3>+CME ERROR: <err>
The Read command
displays the current
mode and settings. This
command works only
in MUX state.
Test +CMUX=? +CMUX: (list of supported
<mode>s),(list of
supported<subset>s),(list of
supported <port_speed>s),(list
ofsupported <N1>s),(list of supported
<T1>s),(list ofsupported <N2>s),(list
of supported <T2>s),(list ofsupported
<T3>s),(list of supported <k>s)
The Test Command
displays a list of
supported modes and
parameters. This
command works in
both PREMUX and
MUX states.