Live trace confirmed every inbound call's CALLERID(num) came back identical
to the DID that was dialed, regardless of who actually called - meaning
every restricted-tier allowed_numbers check was structurally impossible to
satisfy, since the "caller ID" Asterisk saw was never the real one.
The [pstn-trunk] endpoint had a static `callerid=<DID>` default (redundant
for outbound - the dialplan already sets CALLERID(num) on the calling
channel before Dial(), which is what actually gets presented) with no
trust_id_inbound setting. Removed the static default and added
trust_id_inbound=yes so real caller identity the provider sends
(P-Asserted-Identity/Remote-Party-ID, in addition to the From header) is
honored for inbound calls instead of falling back to the DID.
Claude
5c8c04700e