[Freeswitch-users] Both Way early media

Mehdi Shirazi m.shirazi at gmail.com
Thu Mar 21 14:08:09 UTC 2019

With help of pre_answer application I can receive DTMF while playing an
early media announce in most cases but if destinations was in a Access
Gateway with H.248 protocol I can play early media but can not receive
DTMF. This is because of H.248 nature in pre answer phase ?
I know that if even there was no a=sendrecv in sdp it was implicitly there
but is there a way to force this in 183 response ?

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