I have a small problem. I recently switched from using an X100P clone
(lousy sound quality) to a TDM400 with one FXO and three FXS interfaces.
When I made that switch, CLIP (Calling line presentation) stopped working,
in fact, Asterisk now does not ever see the calling party’s number.
I know that that there are different protocols for transmitting that info, so where do I tell either Asterisk or the TDM400 or the Zaptel driver which protocol to use?
This is in Austria, btw, and of course on a POTS line.