> Well, technically you could attach the line disciplibe, but it would > do nothing. Do you have a CDC-ACm device that can be used for PPS > or is that a theoretical question? I have one. Or rather I made one hoping it would work out-of-the-box. ( It's a OSHW device https://osmocom.org/projects/e1-t1-adapter/wiki/IcE1usb ) Cheers, Sylvain