[asterisk-dev] Asterisk-11 DTMF bug ?

[Mark Murawski]

Hey,

So, I'm seeing an issue where a Polycom IP-550 with 4.1.1 firmware is 
sending RFC2833 DTMF packets as shown in the capture attached.  I can 
send pcaps as necessary, if needed.

10.0.90.6 is the Polycom 10.0.90.1 is Asterisk.

So of course you do:
 > rtp set debug 10.0.90.6

And then get the below, while the polycom is sending digits.  The packet 
capture clearly shows DTMF going to 10.0.90.1, but Asterisk is not 
picking them up.

[2017-04-04 14:14:18.830] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:18.830] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:18.850] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:18.850] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:18.870] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:18.870] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:18.890] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:18.890] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
...
[2017-04-04 14:14:22.210] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:22.210] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:22.230] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:22.230] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:22.250] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:22.250] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)
[2017-04-04 14:14:22.270] VERBOSE[21403][C-00001424] res_rtp_asterisk.c: 
[2017-04-04 14:14:22.270] [C-00001424] Sent RTP P2P packet to 
10.0.90.6:2242 (type 00, len 000160)


I am running 11.20 on this particular box, for some specific reasons. 
I'm currently working out some other issues with the newer/latest 11's, 
so I'm on this for now.

Before I start digging into the code, are there any known issues with 
DTMF/RFC2833 in this version?  Any workarounds I can implement?

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