CMUX on BG95-m3

IoT Modules LPWA Module
1

I believe that the BG95-m3 module should support CMUX on UART1, but I can’t get it to work. I get “+CME ERROR: 3” when I try to enable it.

Should this work? what firmware was support added?
Can someone confirm if UART1 is the main serial port on the USB (/dev/ttyUSB2 for example).

Basically I’m trying to use CMUX to be able to send AT commands as well as having a PPP connection at the same time.

2

1.For CMUX issue , pls kindly open the below docs；
https://cnquectel-my.sharepoint.com/:f:/g/personal/america-fae_quectel_com/EnTjG072F2JPq3OwMQLYcbcBJ1RZ3vk9U27frKMq_QeoYQ?e=X6Gwaw

  1. Main URAT is different from the UART1

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@Stephen.Li-Q so CMUX isn’t available over the USB uart, is that correct?