[Freeswitch-users] Strange DTMF Tones On Inbound Calls

Fri Mar 23 14:19:09 MSK 2012

Hello all,

Got a bit of a strange one, we appear to be getting DTMF tones on incoming calls when the caller hasn’t even pressed any keys.

It normally happens with 10 seconds or so after the call has been answered.

Here is the log of it happening earlier: -

2012-03-23 10:38:16.852654 [DEBUG] ftdm_io.c:3530 [s1c2][1:2] Queuing DTMF A (debug = 0)
2012-03-23 10:38:16.852654 [DEBUG] mod_freetdm.c:799 Queuing DTMF [A] in channel FreeTDM/1:2/000 device 1:2
2012-03-23 10:38:16.915653 [DEBUG] switch_rtp.c:2420 Send start packet for [A] ts=49440 dur=160/160/2000 seq=46803 lw=49440
2012-03-23 10:38:16.936653 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=320/320/2000 seq=46804 lw=49600
2012-03-23 10:38:16.957652 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=480/480/2000 seq=46805 lw=49760
2012-03-23 10:38:16.978652 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=640/640/2000 seq=46806 lw=49920
2012-03-23 10:38:16.999652 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=800/800/2000 seq=46807 lw=50080
2012-03-23 10:38:17.020651 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=960/960/2000 seq=46808 lw=50240
2012-03-23 10:38:17.041651 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1120/1120/2000 seq=46809 lw=50400
2012-03-23 10:38:17.062651 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1280/1280/2000 seq=46810 lw=50560
2012-03-23 10:38:17.083650 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1440/1440/2000 seq=46811 lw=50720
2012-03-23 10:38:17.104650 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1600/1600/2000 seq=46812 lw=50880
2012-03-23 10:38:17.125650 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1760/1760/2000 seq=46813 lw=51040
2012-03-23 10:38:17.146650 [DEBUG] switch_rtp.c:2323 Send middle packet for [A] ts=49440 dur=1920/1920/2000 seq=46814 lw=51200
2012-03-23 10:38:17.167661 [DEBUG] switch_rtp.c:2323 Send end packet for [A] ts=49440 dur=2080/2080/2000 seq=46815 lw=51200
2012-03-23 10:38:17.167661 [DEBUG] switch_rtp.c:2323 Send end packet for [A] ts=49440 dur=2080/2080/2000 seq=46816 lw=51200
2012-03-23 10:38:17.167661 [DEBUG] switch_rtp.c:2323 Send end packet for [A] ts=49440 dur=2080/2080/2000 seq=46817 lw=51200
2012-03-23 10:38:17.167661 [DEBUG] switch_rtp.c:2271 Queue digit delay of 40ms
2012-03-23 10:38:18.070638 [DEBUG] ftdm_io.c:3530 [s1c2][1:2] Queuing DTMF B (debug = 0)
2012-03-23 10:38:18.070638 [DEBUG] mod_freetdm.c:799 Queuing DTMF [B] in channel FreeTDM/1:2/000 device 1:2
2012-03-23 10:38:18.133637 [DEBUG] switch_rtp.c:2420 Send start packet for [B] ts=59040 dur=160/160/2000 seq=46864 lw=59040
2012-03-23 10:38:18.154637 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=320/320/2000 seq=46865 lw=59200
2012-03-23 10:38:18.175637 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=480/480/2000 seq=46866 lw=59360
2012-03-23 10:38:18.196636 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=640/640/2000 seq=46867 lw=59520
2012-03-23 10:38:18.217636 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=800/800/2000 seq=46868 lw=59680
2012-03-23 10:38:18.238636 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=960/960/2000 seq=46869 lw=59840
2012-03-23 10:38:18.259636 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1120/1120/2000 seq=46870 lw=60000
2012-03-23 10:38:18.280636 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1280/1280/2000 seq=46871 lw=60160
2012-03-23 10:38:18.301635 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1440/1440/2000 seq=46872 lw=60320
2012-03-23 10:38:18.322635 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1600/1600/2000 seq=46873 lw=60480
2012-03-23 10:38:18.343634 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1760/1760/2000 seq=46874 lw=60640
2012-03-23 10:38:18.364634 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=59040 dur=1920/1920/2000 seq=46875 lw=60800
2012-03-23 10:38:18.385634 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=59040 dur=2080/2080/2000 seq=46876 lw=60800
2012-03-23 10:38:18.385634 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=59040 dur=2080/2080/2000 seq=46877 lw=60800
2012-03-23 10:38:18.385634 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=59040 dur=2080/2080/2000 seq=46878 lw=60800

I’m very sure the caller isn’t dialling “A” or “B”!

Running on ISDN via a TE121 card using E1 (euroisdn).  Freeswitch version is “FreeSWITCH Version 1.0.head (git-b9b7266 2012-02-10 12-23-58 -0600)”.

Currently there is a “bind_meta_app” in the config which binds a script on the B leg of the call which parks the call – I haven’t tried turning this off yet to see if it’s this.

Wondering if anyone has any ideas or has come across this before?

Thanks in advance.

[cid:imageacd695.PNG at 9e92e461.40aa4b96]

Daniel Knaggs

Software Developer

        Reality Solutions Ltd, 1 Global Business Park, Hamburg Road, Kingston upon Hull, East Yorkshire, HU7 0AE
Tel: 01482 828000 / Fax: 01482 373100
Daniel.Knaggs at realitysolutions.co.uk<mailto:Daniel.Knaggs at realitysolutions.co.uk>
www.realitysolutions.co.uk<http://www.realitysolutions.co.uk/>
________________________________

Sage Accredited Business Partner serving businesses in Yorkshire & Lincolnshire

[cid:image27a71e.PNG at c2da8488.4683bff1]

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