WP7607-1 enable CMUX over UART fail

Hi All,

I’m unable to create GSM port using the WP7607-1 module , as shown in the image below.
But I try in RC7620-1 module can create GSM port.And GSM can workable.
Could someone please help to solve this issue?Thanks

have you set


Is /dev/ttyUSB1 the AT command port?

Hi @jyijyi ,

Thanks for your reply.
AT!MUXMODE=2 is Enable CMUX over USB. I’m now trying CMUX over UART, and I’ve also tried using USB, but the same fails.
Yes,ttyUSB1 is the AT port.

I never tried with UART, I remember i used the following on USB:

  1. on module, need to type AT!MUXMODE=2 and reset the module, so that mux mode is enabled in USB.

  2. sudo ./gsmMuxd -c -f 31 -d -p /dev/ttyUSB2 -b 115200 -s /dev/mux -w -m wavecom /dev/ptmx /dev/ptmx

gsmmux.rar (80.7 KB)