https://www.3cx.com/docs/sip-trunk-... not supported, 3CX,3CX needs to be restarted.
By default The 3CX Fax server uses T.38.
When an INVITE is routed to the Fax server it will initially answer with a 200 OK containing Audio codecs. Moments after this however, it will send a re-INVITE to the caller with only the T.38 codec in the SDP.
What is the delay usual delay between answer call with 200 OK and 3CX send re-invite to the SIP trunk provider with only the T.38 codec in the SDP ?
By default The 3CX Fax server uses T.38.
When an INVITE is routed to the Fax server it will initially answer with a 200 OK containing Audio codecs. Moments after this however, it will send a re-INVITE to the caller with only the T.38 codec in the SDP.
What is the delay usual delay between answer call with 200 OK and 3CX send re-invite to the SIP trunk provider with only the T.38 codec in the SDP ?
