[Freeswitch-users] Strange DTMF Tones On Inbound Calls

Sun Mar 25 05:20:10 MSD 2012

I'd do an audio recording of the call and open the resulting file in
Audacity. It can do kind of a spectrum analysis to show you if there are
any frequencies that might be fooling the dtmf detector. Also, I'm not
familiar with using Digium cards with FreeTDM. (I have a Digium TE121 or
similar but I don't happen to have any mobo's with the PCIe or whatever
slot type it uses.)

To Moises I'd ask: is there hardware DTMF detection in the Digium cards
that you know of? Also, any known or suspected issues with false DTMF
detection in the scenario mentioned by the OP?

Gracias,
MC

On Sat, Mar 24, 2012 at 5:27 AM, Daniel Knaggs <
Daniel.Knaggs at realitysolutions.co.uk> wrote:

>  They aren’t any faults that I can see.****
>
> ** **
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *
> curriegrad2004
> *Sent:* 23 March 2012 23:23
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] Strange DTMF Tones On Inbound Calls****
>
> ** **
>
> Have you checked for any faults on your TDM link on your side?****
>
> On Fri, Mar 23, 2012 at 10:32 AM, Brian Foster <bdfoster at endigotech.com>
> wrote:****
>
> Please update to latest git.****
>
> ** **
>
> -BDF****
>
> On Fri, Mar 23, 2012 at 7:19 AM, Daniel Knaggs <
> Daniel.Knaggs at realitysolutions.co.uk> wrote:****
>
>   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.****
>
> [image: Description: 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
> www.realitysolutions.co.uk ****
>    ------------------------------
>
> Sage Accredited Business Partner serving businesses in Yorkshire &
> Lincolnshire ****
>
> [image: Description: cid:image27a71e.PNG at c2da8488.4683bff1]****
>
>  ****
>
> ** **
>
> _________________________________________________________________________
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>
> 
> 
>
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> ****
>
> ** **
>
> --
> Brian D. Foster
> Endigo Computer LLC
> Email: bdfoster at endigotech.com
> Phone: 317-800-7876
> Indianapolis, Indiana, USA
>
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> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
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> http://www.freeswitchsolutions.com
>
> 
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