[asterisk-users] RFC2833 DTMF -- with an RTP debug log -- need some analysis/interpretation

[Martin Smith]

Hello all,

I've got an Asterisk system I'm working on here, and we often dial
remote IVR systems, where our end must enter an extension to get to a
remote user. We're using Polycom hardphones here, speaking SIP, and
Asterisk sends these out over a PRI line with Zaptel hardware.

I've used rtp debug on the phone, and I've got output, but I can't tell
if it's correct or not -- I was dialing extension 221, but the remote
system lost one or more of the digits. I'd appreciate another few pairs
of eyes checking out the rtp debug...

[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF begin '2' received on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF begin passthrough '2' on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '2' received on
SIP/199-b31ddc00, duration 60 ms
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end accepted with begin
'2' on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '2' has duration 60
but want minimum 80, emulating on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end emulation of '2'
queued on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[27394] channel.c: DTMF begin '2' received on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[27394] channel.c: DTMF begin ignored '2' on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[27394] channel.c: DTMF end '2' received on
SIP/199-b31ddc00, duration 60 ms
[Jun  9 16:26:21] DTMF[27394] channel.c: DTMF end '2' has duration 60
but want minimum 80, emulating on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[27394] channel.c: DTMF end emulation of '2'
queued on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '2' received on
SIP/199-b31ddc00, duration 222 ms
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '2' put into dtmf
queue on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF begin emulation of '2'
with duration 100 queued on SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF begin '1' received on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF begin passthrough '1' on
SIP/199-b31ddc00
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '1' received on
SIP/199-b31ddc00, duration 80 ms
[Jun  9 16:26:21] DTMF[11028] channel.c: DTMF end '1' put into dtmf
queue on SIP/199-b31ddc00

Thanks!

Martin Smith, Systems Developer
martins at bebr.ufl.edu
Bureau of Economic and Business Research
University of Florida
(352) 392-0171 Ext. 221