I have a need to use 2 AT channels on a device:
one for PPP and,
another one to essentially run AT!GSTATUS? etc.
The current options in AT!UDUSBCOMP=? show some “custom” possibilities…but the AT docs kinda don’t talk about how to create your own “USB composition”. Or how the “profiles” work with the MC7354. So hard to know if this is possible…
I’m mainly concerned about the MC7354 model since we still have a bunch of them. But if this can work on the MC7455 or newer, that be good to know.