[asterisk-users] Fax throughput - Asterisk 1.6.1.9

[David Backeberg]

Cyprus VoIP wrote:
> We set "t38pt_udptl=yes" in sip.conf and allowed all the codecs to the
> local extension and remote Proxy, but it still forces the call to go
> back to a voice call.

That's correct behavior if T.38 cannot autonegotiate.

What happens in the reverse direction, trying to send faxes from your
mysterious proxy to asterisk?