[Freeswitch-users] Jitterbuffer

Fri Nov 20 18:19:51 MSK 2015

1.6.3 should be rolling out today hopefully.  This will be roughly what is
in master now.

On Friday, November 20, 2015, Dragos Oancea <doancea at orange-vallee.net>
wrote:

> Hi
>
> Josh, FS master is not 1.6.2 , it's the latest master branch . Get it from
> git and compile it.
> 1.6.2 does not have the new JB.
>
> I assume you don't transcode at all and you use G.711 along the path.
> Try using ILBC between the OBI200 and Freeswitch , so you would do
> transcoding
> with Jitter Buffer and PLC enabled. It would be better if you don't
> transcode at all,
> but your PSTN provider should offer ILBC or other compressed codec that
> you should try and you would also need to rely on them for PLC .You should
> probably enable the Jitter Buffer on the bridge if you do transcoding :
>  <action application="set" data="rtp_jitter_buffer_during_bridge=true"/>
>
> Regards,
> Dragos
>
> PS:
> Obihai supports Opus in their phones:
> http://www.obihai.com/partner/obi1000 .
>
>
> On 11/20/2015 07:22 AM, Russell Treleaven wrote:
>
> Are you sure the jitter/loss in on the fixed wireless side?
>
> Is the freeswitch<->pstn sip?
>
> Is freeswitch transcoding between the legs?
>
> There is a tool called mtr to measure the loss/jitter along the path.
>
> If freeswitch is not transcoding then it doesn't need a jitter buffer.
> You could actually use bypass_media to take freeswitch out of the media
> path and see if that helps.
> https://freeswitch.org/confluence/display/FREESWITCH/Bypass+Media+Overview
>
>
> On Thu, Nov 19, 2015 at 11:07 PM, Josh Richesin <jlrichesin at gmail.com
> <javascript:_e(%7B%7D,'cvml','jlrichesin at gmail.com');>> wrote:
>
>> Hello all!
>>
>> Thanks for the recommendations on upgrading to FS master, (Assuming that
>> is 1.6.2?)   and using the new Jitter Buffer and OPUS codec.
>> Unfortunately, after researching and working with our ATA vendor OBI, they
>> do not support OPUS.  So that has me form a few more questions on this
>> issue.
>>
>> 1) Is there any documentation on the new Jitter Buffer being used?
>>
>> 2) Is there any reason to believe that upgrading from our current Free
>> Switch Version 1.4.18 to 1.6.2 would fix the issue with the current codec
>> of g711, even tho I can not use opus?
>>
>> 3) Below is the real issue that I am trying to fix:
>>
>> obi200------------> fixed wireless --------> FreeSwitch ------PSTN
>>
>> Call Quality issues are mainly reported by the end user on the PSTN
>> network.  Users report that the calls are cutting in and out but our users
>> on the obi200 side hear them perfectly.  Any ideas on settings to try to
>> optimize in this situation?
>>
>> I know that it is a network related issue, with high jitter, however I
>> know there must be a fix as other VOIP providers can ride the same network
>> path and have no issues at all.
>>
>> 4) Main reason for not just upgrading is that I am using fushionPBX, and
>> they do not yet support 1.6.2, and also trying to figure out an actual
>> upgrade plan so that I do not loose all the customers voicemail's, VM
>> greetings passwords and such.
>>
>> Any help is greatly appreciated with what direction I should go.
>>
>> Thanks!
>>
>> Josh
>>
>> On Fri, Nov 13, 2015 at 9:45 AM, Brian West <brian at freeswitch.org
>> <javascript:_e(%7B%7D,'cvml','brian at freeswitch.org');>> wrote:
>>
>>> We probably need to wipe confluence clean of the incorrect jitter buffer
>>> docs now that its been completely rewritten in the past few months.
>>>
>>> On Thu, Nov 12, 2015 at 4:06 AM, Ola Bäckström <
>>> Ola.Backstrom at loxysoft.se
>>> <javascript:_e(%7B%7D,'cvml','Ola.Backstrom at loxysoft.se');>> wrote:
>>>
>>>> Dragos,
>>>>
>>>>
>>>>
>>>> Your example to enable jitter buffering uses the letter ”p”. Is that a
>>>> typo or does it indeed mean something?
>>>>
>>>> >  You can enable the Jitter Buffer in the dial plan:
>>>> >  <action application="set" data="jitterbuffer_msec=2p:25p:"/>
>>>>
>>>> I see no such usage in the documentation at
>>>> https://freeswitch.org/confluence/display/FREESWITCH/JitterBuffer ,
>>>> but just “60:200:20”.
>>>>
>>>>
>>>>
>>>> Best regards
>>>>
>>>> /Ola
>>>>
>>>>
>>>>
>>>> *From:* freeswitch-users-bounces at lists.freeswitch.org
>>>> <javascript:_e(%7B%7D,'cvml','freeswitch-users-bounces at lists.freeswitch.org');>
>>>> [mailto:freeswitch-users-bounces at lists.freeswitch.org
>>>> <javascript:_e(%7B%7D,'cvml','freeswitch-users-bounces at lists.freeswitch.org');>]
>>>> *On Behalf Of *Dragos Oancea
>>>> *Sent:* den 12 november 2015 10:14
>>>> *To:* freeswitch-users at lists.freeswitch.org
>>>> <javascript:_e(%7B%7D,'cvml','freeswitch-users at lists.freeswitch.org');>
>>>> *Subject:* Re: [Freeswitch-users] Jitterbuffer
>>>>
>>>>
>>>>
>>>> Hi Josh,
>>>>
>>>> Use FS master, it has a new audio Jitter Buffer.
>>>>
>>>> Then you can use Opus with this setting in the codec config:
>>>> <param name="use-jb-lookahead" value="1"/> .
>>>> The other side must be sending FEC so you could profit from it.
>>>>
>>>>
>>>> You can enable the Jitter Buffer in the dial plan:
>>>> <action application="set" data="jitterbuffer_msec=2p:25p:"/>
>>>> And then enable PLC :
>>>> <action application="set" data="rtp_jitter_buffer_plc=true"/>
>>>>
>>>> Regards,
>>>> Dragos
>>>>
>>>>
>>>> On 11/12/2015 07:51 AM, Josh Richesin wrote:
>>>>
>>>> Hello,
>>>>
>>>> I am running FreeSwitch for our small Wireless ISP.   Obviously, as a
>>>> wireless ISP and ITSP, we have a lot of jitter and some packet loss.  Have
>>>> a few questions for this setup.
>>>>
>>>> 1) What is the best codec to use when there is going to be jitter and
>>>> some packetloss?
>>>>
>>>> 2) The ATA's that we are using have adaptive jitter buffers, should I
>>>> enable jitterbuffer on Freeswitch as well?  If so, should it be via sofia
>>>> profiles?
>>>>
>>>> The problem that I am trying to solve is this...
>>>>
>>>> Our voice customers on our freeswitch have a lot of issues with "calls
>>>> breaking up"  When they use another voice provider, like say vonage or
>>>> something running off of a metaswitch, they do not have the same issues.
>>>>
>>>> Any help with this would be appreciated!  Thanks in advance.
>>>>
>>>> Josh
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> _________________________________________________________________________
>>>>
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>>>>
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>>>>
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>>>>
>>>>
>>>>
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>>>>
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>>>>
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>>>>
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>>>>
>>>>
>>>>
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>>>>
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>>>
>>>
>>>
>>> --
>>>
>>> *Brian West*
>>> brian at freeswitch.org
>>> <javascript:_e(%7B%7D,'cvml','brian at freeswitch.org');>
>>>
>>>
>>> *Twitter: @FreeSWITCH , @briankwest*
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>>>
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>>
>>
>> _________________________________________________________________________
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>>
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>
>
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>
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