The entry must be in the dynamic payload number range of 96-127, but there is normally no reason to change from the default entry of 96. Click here for a list of the RTP Payload Type assignments. The Payload Type Number assignment should be the same for both ends of the call.
If 1815-01: DTMF Relay [System: VoIP: Profile (1-4): DTMF (1815): DTMF Relay Enable] is disabled, this option has no meaning.
Both ends of the call should have DTMF Relay enabled.
|96-127||Payload Type Numbers 96-127. [Default] = 96.|