[Freeswitch-users] Bridge to other FS server has no audio until DTMF

Avi Marcus avi at avimarcus.net
Sun Nov 14 16:59:49 UTC 2021 

<anti-action application="set" data="execute_on_answer=playback
silence_stream://100"/>

... I'm not seeing it executing in the logs for leg A or leg B. Maybe
because leg A is already answered?

I tried it again as an export, and upping it to 500ms, but it didn't force
the audio to flow. So far only DTMF has worked.



-Avi Marcus



On Fri, Nov 12, 2021 at 10:38 PM Brian West <brian at freeswitch.com> wrote:

> First off, don't use export and don't use nolocal, just set it and see
> what happens.
>
> /b
>
>
> On Mon, Nov 8, 2021 at 12:36 PM Avi Marcus <avi at avimarcus.net> wrote:
>
>> Is there a way to "fix" the standoff? Perhaps a header to send or a
>> channel variable to set?
>>
>> I'd like to do bypass_media to cut one of my servers out of the media
>> path, but then I won't be able to queue an rfc2833 digit press.
>>
>> Thanks,
>> -Avi Marcus
>> BestFone
>>
>>
>> On Thu, Oct 7, 2021 at 7:50 PM Avi Marcus <avi at avimarcus.net> wrote:
>>
>>> I had to do this to get it to execute on the B leg:
>>> <action application="export" data="nolocal:execute_on_answer=playback
>>> silence_stream://100"/>
>>>
>>> ... but it didn't help. Only DTMF worked... either manually dialed or
>>> via queue_dtmf
>>> Freeswitch A waited for my DTMF to actually send the silence.
>>> Version 1.10.6 -release-18-1ff9d0a60e 64bit
>>>
>>>
>>>  2021-10-07 16:37:10.523346 [DEBUG] switch_core_media.c:9025 Set comfort
>>> noise payload to 13
>>>  2021-10-07 16:37:10.523346 [NOTICE] sofia.c:8586 Channel
>>> [sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com] has been answered
>>>  EXECUTE [depth=1] sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com
>>> playback(silence_stream://100)
>>>  2021-10-07 16:37:10.523346 [DEBUG] switch_ivr_play_say.c:1486 Codec
>>> Activated L16 at 8000hz 1 channels 20ms
>>>
>>>  -- 20 seconds later when I pressed a button --
>>>
>>>  2021-10-07 16:37:30.563357 [DEBUG] switch_ivr_play_say.c:1931 done
>>> playing file silence_stream://100
>>>  2021-10-07 16:37:30.563357 [DEBUG] switch_channel.c:3865
>>> (sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com) Callstate Change
>>> DOWN -> ACTIVE
>>>  2021-10-07 16:37:30.563357 [DEBUG] switch_ivr_bridge.c:1793
>>> (sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com) State Change
>>> CS_CONSUME_MEDIA -> CS_EXCHANGE_MEDIA
>>>  2021-10-07 16:37:30.563357 [DEBUG] switch_core_state_machine.c:585
>>> (sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com) Running State
>>> Change CS_EXCHANGE_MEDIA (Cur 12 Tot 351090)
>>>  2021-10-07 16:37:30.563357 [DEBUG] switch_core_state_machine.c:654
>>> (sofia/external/JOIN_CLASS_7229999 at voip.bestfone.com) State
>>> EXCHANGE_MEDIA
>>>  2021-10-07 16:37:30.563357 [DEBUG] mod_sofia.c:656 SOFIA EXCHANGE_MEDIA
>>>  2021-10-07 16:37:30.583346 [DEBUG] switch_rtp.c:5619 Send start packet
>>> for [5] ts=960 dur=160/160/2000 seq=26795 lw=960
>>>
>>>
>>>
>>> This seemingly shouldn't be an issue. FS1 already has active media from
>>> the A leg, so it should initiate to the B leg. The B leg has been
>>> instructed to play a file, so it should initiate to the A leg...
>>> But if this is somehow unavoidable, perhaps we need a workaround config,
>>> where we have a simple variable in the bridge string to avoid the standoff?
>>>
>>> -Avi Marcus
>>>
>>>
>>>
>>> On Thu, Oct 7, 2021 at 6:01 PM Brian West <brian at freeswitch.com> wrote:
>>>
>>>> execure_on_answer=playback::silence_stream://100 should solve it.
>>>>
>>>> /b
>>>> PS, the non pc term that this has been said to be is
>>>> https://en.wikipedia.org/wiki/Mexican_standoff
>>>>
>>>> On Thu, Oct 7, 2021 at 7:39 AM Avi Marcus <avi at avimarcus.net> wrote:
>>>>
>>>>> I meant there's audio from pstn to fs1, but indeed I'm observing no
>>>>> audio between fs1 and fs2.
>>>>>
>>>>> What api should I call with api on answer..?
>>>>>
>>>>> On Thu, Oct 7, 2021, 3:19 PM David Villasmil <
>>>>> david.villasmil.work at gmail.com> wrote:
>>>>>
>>>>>> If you see rtp glowing both ways, then this is not the stalemate I
>>>>>> was talking about. The scenario I’m referring to is about FS not starting
>>>>>> sending rtp waiting for the other side to start sending, and the other side
>>>>>> doing the same thing, thus going into a stalemate. This is solved by
>>>>>> injecting a silence (I would do api_on_answer).
>>>>>>
>>>>>> What you’re describing seems different to me.
>>>>>>
>>>>>> On Thu, 7 Oct 2021 at 12:36, Avi Marcus <avi at avimarcus.net> wrote:
>>>>>>
>>>>>>> I'm using dialplan bridge, so then the dialplan is over. How do I
>>>>>>> send silence after the bridge...? An api_on_answer with a uuid_broadcast..
>>>>>>> seems overly complicated.
>>>>>>>
>>>>>>> <action application="bridge" data="sofia/external/
>>>>>>> number at yyy.bestfone.com"/>
>>>>>>>
>>>>>>>
>>>>>>> (And I don't know why there isn't audio - I had to set up an audio
>>>>>>> to get to this options in the IVR... so there's already audio. And Server B
>>>>>>> also started a file playback so should have initiated audio.)
>>>>>>>
>>>>>>>
>>>>>>> -Avi Marcus
>>>>>>>
>>>>>>> On Thu, Oct 7, 2021 at 1:41 PM David Villasmil <
>>>>>>> david.villasmil.work at gmail.com> wrote:
>>>>>>>
>>>>>>>> I seem to remember Brian saying this was because FS is waiting for
>>>>>>>> the remote end to send audio before starting itself. I believe he
>>>>>>>> recommended sending an empty (silence) to force the audio stream to be sent
>>>>>>>> even if fs hasn’t received anything.
>>>>>>>>
>>>>>>>> On Thu, 7 Oct 2021 at 07:50, Avi Marcus <avi at avimarcus.net> wrote:
>>>>>>>>
>>>>>>>>> I started a new thread in case anyone muted it... it wasn't simply
>>>>>>>>> a network issue.
>>>>>>>>>
>>>>>>>>> It seems the bridging occurs and dialplan processes, but no media
>>>>>>>>> flows - until DTMF from the A-leg.
>>>>>>>>> Call flow: PSTN (via carrier) to freeswitch A -> media and IVR ->
>>>>>>>>> freeswitch B.
>>>>>>>>>
>>>>>>>>> Calls directly from carrier to Freeswitch B are fine.
>>>>>>>>> Calls from a different carrier to Freeswitch A -> media and IVR ->
>>>>>>>>> Freeswitch B are also fine.
>>>>>>>>> So it sounds like a carrier/unique SIP/RTP issue, but since FS is
>>>>>>>>> in the media path, it's an FS issue...
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I actually mcguyvered this right now with a queue_dtmf before the
>>>>>>>>> bridge, to force the audio stream to update.
>>>>>>>>>
>>>>>>>>> Here's the log on freeswitch B:
>>>>>>>>>
>>>>>>>>> EXECUTE [depth=0] sofia/external/972581234567 at 172.123.123.123
>>>>>>>>>  log(DEBUG class chosen: 1234567)
>>>>>>>>> 2021-10-07 09:16:24.343175 [DEBUG
>>>>>>>>> ] mod_dptools.c:1879 class chosen: 1234567
>>>>>>>>> EXECUTE [depth=0] sofia/external/972581234567 at 172.123.123.123
>>>>>>>>>  javascript(conference/lookupAndJoinConference.js 1234567)
>>>>>>>>> EXECUTE [depth=0] sofia/external/972581234567 at 172.123.123.123
>>>>>>>>>  playback(class/hold-wait-teacher.wav)
>>>>>>>>> 2021-10-07 09:16:24.363379 [DEBUG
>>>>>>>>> ] sofia.c:7406 Channel sofia/external/972581234567 at 172.123.123.123
>>>>>>>>>  entering state [completed][200]
>>>>>>>>> 2021-10-07 09:16:24.363379 [DEBUG
>>>>>>>>> ] sofia.c:7406 Channel sofia/external/972581234567 at 172.123.123.123
>>>>>>>>>  entering state [ready][200]
>>>>>>>>> 2021-10-07 09:16:24.363379 [DEBUG
>>>>>>>>> ] switch_ivr_play_say.c:1486 Codec Activated L16 at 8000hz
>>>>>>>>>  1 channels 20ms
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 2021-10-07 09:16:34.903283 [DEBUG
>>>>>>>>> ] switch_rtp.c:7793 Correct audio ip/port confirmed.
>>>>>>>>> 2021-10-07 09:16:34.923190 [DEBUG
>>>>>>>>> ] switch_rtp.c:8038 RTP RECV DTMF 3:2080
>>>>>>>>> 2021-10-07 09:16:34.923190 [INFO
>>>>>>>>> ] switch_channel.c:522 RECV DTMF 3:2080
>>>>>>>>> 2021-10-07 09:16:34.923190 [DEBUG] mod_dptools.c:2389 Digit 3
>>>>>>>>> 2021-10-07 09:16:37.143169 [DEBUG
>>>>>>>>> ] switch_ivr_play_say.c:1931 done playing file /usr/share/freeswitch/sounds/en/us/matthew/class/hold-wait-teacher.wav
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> You can see a 10 second gap between call ready 200 and correct
>>>>>>>>> audio/ip and file done playing (it's a 2 second file), and this doesn't
>>>>>>>>> happen automatically, only when I choose to press something.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Any ideas as to the root cause of this?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -Avi Marcus
>>>>>>>>>
>>>>>>>>> ---------- Forwarded message ---------
>>>>>>>>> From: Avi Marcus <avi at avimarcus.net>
>>>>>>>>> Date: Wed, Oct 6, 2021 at 3:32 PM
>>>>>>>>> Subject: Bridge to other FS server has no audio ???
>>>>>>>>> To: FreeSWITCH Users Help <FreeSWITCH-users at lists.freeswitch.org>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Any ideas on why a call doesn't have media? It used to work, but I
>>>>>>>>> think my upstream changed his SDP again.
>>>>>>>>>
>>>>>>>>> - FreeSWITCH Server A - call comes in and bypass_media bridges to
>>>>>>>>> FS server B. Media works.
>>>>>>>>> - FreeSWITCH Server A - call comes in and bridges to FS server B
>>>>>>>>> (not on bypass). Media works.
>>>>>>>>> - FreeSWITCH Server A - call comes in, gets answered, then bridges
>>>>>>>>> to FS server B. Call looks OK, but no media is flowing (I don't hear
>>>>>>>>> anything, PCAPs just have SIP, and there isn't 80kbps network traffic). All
>>>>>>>>> the same codecs are set in the json cdrs (PCMU).
>>>>>>>>>
>>>>>>>>> FS server B is to join a conference if that matters.
>>>>>>>>>
>>>>>>>>> I was assuming it had to do with codecs, but setting
>>>>>>>>> absolute_codec_string to PCMU doesn't make any difference in the logs  -
>>>>>>>>> it's already always PCMU.
>>>>>>>>>
>>>>>>>>> I have NO clue what further could cause this other than codecs,
>>>>>>>>> which seem to be fine. Any ideas please?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -Avi Marcus
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _________________________________________________________________________
>>>>>>>>>
>>>>>>>>> The FreeSWITCH project is sponsored by SignalWire
>>>>>>>>> https://signalwire.com
>>>>>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and
>>>>>>>>> PSTN services.
>>>>>>>>> Build your next product on our scalable cloud platform.
>>>>>>>>>
>>>>>>>>> Join our online community to chat in real time
>>>>>>>>> https://signalwire.community
>>>>>>>>>
>>>>>>>>> Professional FreeSWITCH Services
>>>>>>>>> sales at freeswitch.com
>>>>>>>>> https://freeswitch.com
>>>>>>>>>
>>>>>>>>> Official FreeSWITCH Sites
>>>>>>>>> https://freeswitch.com/oss
>>>>>>>>> https://freeswitch.org/confluence
>>>>>>>>> https://cluecon.com
>>>>>>>>>
>>>>>>>>> FreeSWITCH-users mailing list
>>>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>>> UNSUBSCRIBE:
>>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>>> https://freeswitch.com
>>>>>>>>
>>>>>>>> --
>>>>>>>> Regards,
>>>>>>>>
>>>>>>>> David Villasmil
>>>>>>>> email: david.villasmil.work at gmail.com
>>>>>>>> phone: +34669448337
>>>>>>>>
>>>>>>>> _________________________________________________________________________
>>>>>>>>
>>>>>>>> The FreeSWITCH project is sponsored by SignalWire
>>>>>>>> https://signalwire.com
>>>>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>>>>>>> services.
>>>>>>>> Build your next product on our scalable cloud platform.
>>>>>>>>
>>>>>>>> Join our online community to chat in real time
>>>>>>>> https://signalwire.community
>>>>>>>>
>>>>>>>> Professional FreeSWITCH Services
>>>>>>>> sales at freeswitch.com
>>>>>>>> https://freeswitch.com
>>>>>>>>
>>>>>>>> Official FreeSWITCH Sites
>>>>>>>> https://freeswitch.com/oss
>>>>>>>> https://freeswitch.org/confluence
>>>>>>>> https://cluecon.com
>>>>>>>>
>>>>>>>> FreeSWITCH-users mailing list
>>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>>> UNSUBSCRIBE:
>>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>>> https://freeswitch.com
>>>>>>>
>>>>>>>
>>>>>>> _________________________________________________________________________
>>>>>>>
>>>>>>> The FreeSWITCH project is sponsored by SignalWire
>>>>>>> https://signalwire.com
>>>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>>>>>> services.
>>>>>>> Build your next product on our scalable cloud platform.
>>>>>>>
>>>>>>> Join our online community to chat in real time
>>>>>>> https://signalwire.community
>>>>>>>
>>>>>>> Professional FreeSWITCH Services
>>>>>>> sales at freeswitch.com
>>>>>>> https://freeswitch.com
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
>>>>>>> https://freeswitch.com/oss
>>>>>>> https://freeswitch.org/confluence
>>>>>>> https://cluecon.com
>>>>>>>
>>>>>>> FreeSWITCH-users mailing list
>>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>>> UNSUBSCRIBE:
>>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>>> https://freeswitch.com
>>>>>>
>>>>>> --
>>>>>> Regards,
>>>>>>
>>>>>> David Villasmil
>>>>>> email: david.villasmil.work at gmail.com
>>>>>> phone: +34669448337
>>>>>>
>>>>>> _________________________________________________________________________
>>>>>>
>>>>>> The FreeSWITCH project is sponsored by SignalWire
>>>>>> https://signalwire.com
>>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>>>>> services.
>>>>>> Build your next product on our scalable cloud platform.
>>>>>>
>>>>>> Join our online community to chat in real time
>>>>>> https://signalwire.community
>>>>>>
>>>>>> Professional FreeSWITCH Services
>>>>>> sales at freeswitch.com
>>>>>> https://freeswitch.com
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> https://freeswitch.com/oss
>>>>>> https://freeswitch.org/confluence
>>>>>> https://cluecon.com
>>>>>>
>>>>>> FreeSWITCH-users mailing list
>>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>>> UNSUBSCRIBE:
>>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>>> https://freeswitch.com
>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>>
>>>>> The FreeSWITCH project is sponsored by SignalWire
>>>>> https://signalwire.com
>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>>>> services.
>>>>> Build your next product on our scalable cloud platform.
>>>>>
>>>>> Join our online community to chat in real time
>>>>> https://signalwire.community
>>>>>
>>>>> Professional FreeSWITCH Services
>>>>> sales at freeswitch.com
>>>>> https://freeswitch.com
>>>>>
>>>>> Official FreeSWITCH Sites
>>>>> https://freeswitch.com/oss
>>>>> https://freeswitch.org/confluence
>>>>> https://cluecon.com
>>>>>
>>>>> FreeSWITCH-users mailing list
>>>>> FreeSWITCH-users at lists.freeswitch.org
>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>>> UNSUBSCRIBE:
>>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>>> https://freeswitch.com
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Brian West | Co-founder and Developer
>>>>
>>>> Need Commercial support? email sales at freeswitch.com
>>>>
>>>> FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045
>>>> <https://maps.google.com/?q=17345+Civic+Drive+%232531+Brookfield,+WI+53045&entry=gmail&source=g>
>>>>
>>>> Email: brian at freeswitch.com
>>>>
>>>> Mobile: 918-424-9378
>>>>
>>>> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
>>>>
>>>> [image: https://www.facebook.com/signalwireinc?src=email]
>>>> <https://www.facebook.com/freeswitch> [image:
>>>> https://twitter.com/freeswitch] <https://twitter.com/freeswitch>
>>>>
>>>> _________________________________________________________________________
>>>>
>>>> The FreeSWITCH project is sponsored by SignalWire
>>>> https://signalwire.com
>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>>> services.
>>>> Build your next product on our scalable cloud platform.
>>>>
>>>> Join our online community to chat in real time
>>>> https://signalwire.community
>>>>
>>>> Professional FreeSWITCH Services
>>>> sales at freeswitch.com
>>>> https://freeswitch.com
>>>>
>>>> Official FreeSWITCH Sites
>>>> https://freeswitch.com/oss
>>>> https://freeswitch.org/confluence
>>>> https://cluecon.com
>>>>
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:
>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>> https://freeswitch.com
>>>
>>> _________________________________________________________________________
>>>
>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>>> services.
>>> Build your next product on our scalable cloud platform.
>>>
>>> Join our online community to chat in real time
>>> https://signalwire.community
>>>
>>> Professional FreeSWITCH Services
>>> sales at freeswitch.com
>>> https://freeswitch.com
>>>
>>> Official FreeSWITCH Sites
>>> https://freeswitch.com/oss
>>> https://freeswitch.org/confluence
>>> https://cluecon.com
>>>
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> https://freeswitch.com
>>
>> _________________________________________________________________________
>>
>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
>> services.
>> Build your next product on our scalable cloud platform.
>>
>> Join our online community to chat in real time
>> https://signalwire.community
>>
>> Professional FreeSWITCH Services
>> sales at freeswitch.com
>> https://freeswitch.com
>>
>> Official FreeSWITCH Sites
>> https://freeswitch.com/oss
>> https://freeswitch.org/confluence
>> https://cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> https://freeswitch.com
>
>
>
> --
>
> Brian West | Co-founder and Developer
>
> Need Commercial support? email sales at freeswitch.com
>
> FreeSWITCH Solutions | 17345 Civic Drive #2531 Brookfield, WI 53045
> <https://maps.google.com/?q=17345+Civic+Drive+%232531+Brookfield,+WI+53045&entry=gmail&source=g>
>
> Email: brian at freeswitch.com
>
> Mobile: 918-424-9378
>
> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
>
> [image: https://www.facebook.com/signalwireinc?src=email]
> <https://www.facebook.com/freeswitch> [image:
> https://twitter.com/freeswitch] <https://twitter.com/freeswitch>
>
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