[Freeswitch-users] Deliberately adding delay to all calls

Mon Jan 29 19:14:01 UTC 2018

I've worked on this some more, and have been able to watch a little more of
what's happening by splitting into two FreeSWITCH instances and sending
traffic between them.

I can make the jitter buffer and delay_echo provide the required delay, and
this works fine with a basic SIP softphone.

What's happening is that mod_portaudio is providing L16 at high sample
rates and isn't transcoding it even across servers.

It seems that I need to convert L16 48K to (say) PCMA or OPUS or something
that delay_echo or the jitterbuffer could deal with.

Is that something that's possible? I know I can eavesdrop or send to a
conference, but is there a way I can easily convert from portaudio to
something more generic to send to the dialplan?

Erik

On Sun, Jan 28, 2018 at 8:36 PM, Alexey Sibyakin <alex at freeswitch.com>
wrote:

> <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
> <action application="export" data="nolocal:jitterbuffer_mse
> c=3000:3200:20"/>
>
> here you need to choose Alice or Bob will have JB, not both of them only
> half
>
> On Fri, Jan 26, 2018 at 12:35 PM, Erik M. Devane - Comms Guy <
> emdevane at gmail.com> wrote:
>
>> I'm sorry, I'm just not having any luck getting this going.
>>
>> Ideally, I'd like to be able to originate the portaudio endpoint into
>> park, and eavesdrop on it there, but I understand that's convoluted to work
>> with, so as a test I have a single extension:
>>
>> <extension name="portaudio_USB">
>>     <condition field="destination_number" expression="^1(\d{2})$">
>>     <action application="answer"/>
>> <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
>> <action application="export" data="nolocal:jitterbuffer_mse
>> c=3000:3200:20"/>
>>   <action application="bridge" data="portaudio/endpoints/USB_01"/>
>>     </condition>
>>   </extension>
>>
>> Dialing 101 from a SIP client (MicroSIP) as user 1000 from the default
>> configuration causes me to be bridged to the portaudio endpoint (I can hear
>> input from the channel), but there's no delay at all.
>>
>>
>>
>>
>>
>> On Thu, Jan 25, 2018 at 10:13 AM, Brian West <brian at freeswitch.com>
>> wrote:
>>
>>> also you'll have to set rtp_jitter_buffer_during_bridge to true.
>>>
>>> /b
>>>
>>>
>>> On Thu, Jan 25, 2018 at 2:22 AM, Alexey Sibyakin <alex at freeswitch.com>
>>> wrote:
>>>
>>>> Then you should try to set JB for b-leg via export nolocal.
>>>>
>>>> On Thu, Jan 25, 2018 at 3:44 PM, Erik M. Devane - Comms Guy <
>>>> emdevane at gmail.com> wrote:
>>>>
>>>>> Thank you for the reply. Here's what I tried:
>>>>>
>>>>> <action application="set" data="jitterbuffer_msec=3000:3200:20"/>
>>>>>
>>>>> Works for calls from SIP clients but not for PortAudio calls.
>>>>>
>>>>> Same with delay_echo - the CODEC is seen as RAW and so the
>>>>> jitterbuffer doesn't seem to be engaged (read_frame->packet doesn't have
>>>>> anything to work with so it skips the buffer).
>>>>>
>>>>> I have tried to have PortAudio > extension 1 > bridge to extension 2,
>>>>> which produces better results, but (in my hands at least) it causes memory
>>>>> leaks and is unwieldy.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Wed, Jan 24, 2018 at 11:59 PM, Alexey Sibyakin <alex at freeswitch.com
>>>>> > wrote:
>>>>>
>>>>>> JB should be fine. Any details of unsuccess?
>>>>>> https://freeswitch.org/confluence/display/FREESWITCH/JitterBuffer
>>>>>>
>>>>>> On Thu, Jan 25, 2018 at 2:45 PM, Erik M. Devane - Comms Guy <
>>>>>> emdevane at gmail.com> wrote:
>>>>>>
>>>>>>> I've been working on using FreeSWITCH as a bridge between different
>>>>>>> devices, and I need to delay all calls by 2-3 seconds in order for the
>>>>>>> external systems to keep up.
>>>>>>>
>>>>>>> This delay should happen at the start of a call, and all subsequent
>>>>>>> audio should sound fine, just late.
>>>>>>> I know that doing this sounds silly - I'm sorry about that.
>>>>>>>
>>>>>>> Here are my approaches:
>>>>>>>
>>>>>>> 1) Eavesdrop on a call send through delay_echo - this works for SIP
>>>>>>> clients but I have to do an absolute_codec_string as it seems that CODEC
>>>>>>> support is limited, and I'm often getting no delay at all with my PortAudio
>>>>>>> clients.
>>>>>>>
>>>>>>> 2) Use lua to do a session freeswitch.msleep on answer - exactly
>>>>>>> what Confluence tells me to avoid - if I sleep but don't consume audio, I
>>>>>>> think I can get the desired result.
>>>>>>>
>>>>>>> 3) Mess with the jitterbuffer - I haven't had any success with this
>>>>>>> yet.
>>>>>>>
>>>>>>> 4) Increase the buffer in mod_PortAudio.
>>>>>>>
>>>>>>> Writing this out makes me sure that I'm missing something - a way of
>>>>>>> getting delay_echo to work for all calls, or a way to pause session media
>>>>>>> to get the desired effect.
>>>>>>>
>>>>>>> Can you please help?
>>>>>>>
>>>>>>> ____________________________________________________________
>>>>>>> _____________
>>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>>> consulting at freeswitch.org
>>>>>>> http://www.freeswitchsolutions.com
>>>>>>>
>>>>>>> Official FreeSWITCH Sites
>>>>>>> http://www.freeswitch.org
>>>>>>> http://confluence.freeswitch.org
>>>>>>> http://www.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/free
>>>>>>> switch-users
>>>>>>> http://www.freeswitch.org
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Alex Sibyakin | Support Engineer
>>>>>> 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: alex at freeswitch.com
>>>>>> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
>>>>>> Need commercial support? Contact sales at freeswitch.com for details.
>>>>>>
>>>>>> ____________________________________________________________
>>>>>> _____________
>>>>>> Professional FreeSWITCH Consulting Services:
>>>>>> consulting at freeswitch.org
>>>>>> http://www.freeswitchsolutions.com
>>>>>>
>>>>>> Official FreeSWITCH Sites
>>>>>> http://www.freeswitch.org
>>>>>> http://confluence.freeswitch.org
>>>>>> http://www.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/free
>>>>>> switch-users
>>>>>> http://www.freeswitch.org
>>>>>>
>>>>>
>>>>>
>>>>> ____________________________________________________________
>>>>> _____________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> Official FreeSWITCH Sites
>>>>> http://www.freeswitch.org
>>>>> http://confluence.freeswitch.org
>>>>> http://www.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/free
>>>>> switch-users
>>>>> http://www.freeswitch.org
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> Alex Sibyakin | Support Engineer
>>>> 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: alex at freeswitch.com
>>>> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
>>>> Need commercial support? Contact sales at freeswitch.com for details.
>>>>
>>>> ____________________________________________________________
>>>> _____________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://confluence.freeswitch.org
>>>> http://www.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/free
>>>> switch-users
>>>> http://www.freeswitch.org
>>>>
>>>
>>>
>>>
>>> --
>>>
>>> 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 <(918)%20424-9378>
>>>
>>> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
>>>
>>> [image: color-facebook-96.png] <https://www.facebook.com/freeswitch/>[image:
>>> color-twitter-96.png]
>>> <https://twitter.com/freeswitch?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor>
>>>
>>> ____________________________________________________________
>>> _____________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://confluence.freeswitch.org
>>> http://www.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
>>> http://www.freeswitch.org
>>>
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.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
>> http://www.freeswitch.org
>>
>
>
>
> --
>
> Alex Sibyakin | Support Engineer
> 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: alex at freeswitch.com
> Website: https://www.FreeSWITCH.com <https://www.freeswitch.com/>
> Need commercial support? Contact sales at freeswitch.com for details.
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.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
> http://www.freeswitch.org
>
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