[Freeswitch-users] rfc2833 DTMF behaviour

Pete Kelly pkelly at gmail.com
Thu Jun 4 20:12:52 MSD 2015


I am trying to send rfc2833 DTMF with SIPP into FreeSWITCH and have the
DTMF be passed along to the bridged leg.

If I set up the following scenario:

Bria > FreeSWITCH > SIPP

and press a DTMF tone on Bria, I see the DTMF received in FS and then it
being sent out to the bridged leg.

However if I replace Bria with SIPP and play one of the SIPP supplied
rfc_2833 pcaps, I only see the DTMF being received by FreeSWITCH but it is
not sent to the bridged leg.

Does anyone have any suggestions?

This is the log indicating FS is receiving the DTMF from SIPP
2015-06-04 15:41:57.343854 [DEBUG] switch_rtp.c:6092 RTP RECV DTMF 2:2240
2015-06-04 15:41:57.343854 [DEBUG] switch_channel.c:488 RECV DTMF 2:2240
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