Multi-Tech Systems GPRS (MTMMC-G) Benutzerhandbuch

Chapter 12 – V.24 and V.25 Commands  

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

106 

Description: 

This command manages the data/AT commands in multiplexing mode. See Appendix B for the 
Data/Commands multiplexing protocol description. 

Multiplexing disabled. When the product is online (data communication in progress), no AT 
command can be used (default). 

1 

Multiplexing enabled. Data flows and AT commands are multiplexed while in online mode (data 
communication in progress). 

Note:  The Mulitplexing mode is available to only one UART. If this mode is available on UART1 

and the AT+WMUX=1 command is sent through UART2, the multiplexing mode will be 
available on UART2 and disabled on UART1.

Syntax:  

Command syntax: AT+WMUX=<mode> 

AT+WMUX=? +WMUX: 

(0-1) 

OK 

AT+WMUX? +WMUX: 

0 

OK 
Note: Data/Commands multiplexing disabled 

AT+WMUX=1 
Note: Enable Data/Commands multiplexing 

OK