[asterisk-bugs] [JIRA] (ASTERISK-20975) DTMF issue with SIP trunk

[Anna Vlasenko (JIRA)]

Anna Vlasenko created ASTERISK-20975:
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             Summary: DTMF issue with SIP trunk
                 Key: ASTERISK-20975
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20975
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
         Environment: Cent OS 5.8
            Reporter: Anna Vlasenko


DTMF seems not work reliably for incoming calls through Skype Connect trunk.

The system is installed from FreePBX distro. Asterisk version is 1.8.8.0
There is a Skype connect trunk configured for LD calls. The problem is when users call a Skype number that leads to IVR, and try to reach any extension, Asterisk ignores DTMF tones.

relaxdtmf=yes  
DTMF mode is RFC2833 (as Skype recommends)
jitterbuffer is set to yes

and that's what I see in logs. 

[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF begin '8' received on SIP/SkypeConnect-00000652
[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF begin ignored '8' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF end '8' received on SIP/SkypeConnect-00000652, duration 240 ms
[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF end passthrough '8' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF begin '9' received on SIP/SkypeConnect-00000652
[2013-01-23 16:09:39] DTMF[13332] channel.c: DTMF begin ignored '9' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF end '9' received on SIP/SkypeConnect-00000652, duration 240 ms
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF end passthrough '9' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF begin '4' received on SIP/SkypeConnect-00000652
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF begin ignored '4' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF end '4' received on SIP/SkypeConnect-00000652, duration 240 ms
[2013-01-23 16:09:40] DTMF[13332] channel.c: DTMF end passthrough '4' on SIP/SkypeConnect-00000652                                                                      [2013-01-23 16:09:41] DTMF[13332] channel.c: DTMF begin '3' received on SIP/SkypeConnect-00000652
[2013-01-23 16:09:41] DTMF[13332] channel.c: DTMF begin ignored '3' on SIP/SkypeConnect-00000652
[2013-01-23 16:09:41] DTMF[13332] channel.c: DTMF end '3' received on SIP/SkypeConnect-00000652, duration 240 ms
[2013-01-23 16:09:41] DTMF[13332] channel.c: DTMF end passthrough '3' on SIP/SkypeConnect-00000652

The duration seems to be ok. 
But what's about this DTMF ignoring?

 

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