[Freeswitch-users] ERROR: switch_rtp.c:389 Failed DTMF payload check.

Sean Devoy sdevoy at bizfocused.com
Tue Apr 23 00:10:17 MSD 2013


I submitted a jira because people get yelled at for not sending a jira on


However, I really think this might be a Cisco SPA504G setup issue.


I get "[Err] switch_rtp.c:389 Failed DTMF payload check" when I dial OUT and
hit an IVR where I have to enter DTMF numbers.  My latest was entering CC
number,  the response I got was "You entered 4", the first of 16 digits I


Cisco has some parameters for DTMF and my are set thusly:

DTMF Playback Level: 0

DTMF Playback Length: .1 and 

Inband DTMF Boost: 6dB.


Could those values be incorrect or hindering the process?





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