On Thu, Jan 25, 2024 at 03:44:07PM +0000, Alex Frolkin wrote: > All I get from pppd is "LCP: timeout sending Config-Requests", after > the "CONNECT". > > I've also discovered yet another mode of this device (using the patch > below), to turn it into product ID 1001, which comes up as three ucom(4) > ports, and I'm trying to run pppd on the third of those (having poked > all three by hand to see what they do), and the result is the same.
So, testing with a terminal program rather than pppd, after issuing the ATD*99# command, are you are seeing the 'CONNECT' string returned, but then not seeing the characteristic start of the PPP session, (which looks like line noise, but with a repeating pattern) ?
