[Asterisk-Users] SIP Gateway wants T38, Asterisk rejects but media path not established.

[Kevin P. Fleming]

Ray Van Dolson wrote:

> Our SIP/PSTN gateway provider seems to think that Asterisk should initiate a
> renegotiation to G711 when it sends the 488 message rejecting T38.

This is not correct. The 488 response 'cancels' the INVITE, so no codec 
change was ever actually involved. The gateway should continue sending 
G711 since the other device (Asterisk) did not accept the change.