i have AAH connected to pstn via digium TDM01B
had been testing it on telewest line (UK cable company) with very little issues.
now moved to a BT line and had several that i anticipated from infomation on this list.
the one that has caught me out is low volume from the caller via pstn.
using sipura spa-941’s and have to push the volume up to hear.
is there a setting that can correct this