Hi I have a call from Service Provider (SP) to Asterisk to User
User sends a T38 REINVITE
Asterisk passes that to SP
SP challenges the INVITE
Asterisk sends INVITE with credentials but sends G711ulaw in the SDP instead of T38 udptl…
Obviously Fax fails..
Any ideas on how I can maintain the T38 SDP when SP challenges the mid-Call T38 REINVITE?