[Freeswitch-users] Jitterbuffer

Fri Nov 20 21:13:39 MSK 2015

Thank you for all of the reply's and thoughts!  I am sure that the Jitter /
Loss is on the fixed wireless side, even tho the QoS is set.  I am using
some low end ubiquiti devices so I am not convinced that the QoS is working
however.  Running MTR from the FreeSwitch to the end user bounces between
5ms and 200ms.

Same on the return path.  Interesting however that most of the users
complaints are not noticed by our customer, but buy the person that called
them from off net (PSTN) .

I would think it to be an obi issue, however we have voip phones,
Grandstream and a few Grand stream ATA's that have the same exact issue.

When using less jittery network to connect to the FS, everything is fine.
For example, customers of ours that are on fiber or using cable modems have
not reported any of the issues.

Going to the PSTN, we are using SIP trunk to vitelity.

The codec that we are using currently, with no trans coding is PCMU/8000.
I will try Dragos suggestion of transcoding to ILBC.

Thanks!

Josh

On Fri, Nov 20, 2015 at 7:19 AM, Michael Jerris <mike at jerris.com> wrote:

> 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>
>> 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>
>>> 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> 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 [mailto:
>>>>> 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
>>>>> *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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _________________________________________________________________________
>>>>>
>>>>> 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
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> *Brian West*
>>>> brian at freeswitch.org
>>>>
>>>>
>>>> *Twitter: @FreeSWITCH , @briankwest*
>>>> http://www.freeswitchbook.com
>>>> http://www.freeswitchcookbook.com
>>>>
>>>> Got Bugs? Report them here <https://freeswitch.org/jira>! | Reddit:
>>>> /r/freeswitch <https://www.reddit.com/r/freeswitch>
>>>>
>>>> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
>>>> *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> 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
>>>
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services: consulting at freeswitch.orghttp://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Siteshttp://www.freeswitch.orghttp://confluence.freeswitch.orghttp://www.cluecon.com
>>
>> FreeSWITCH-users mailing listFreeSWITCH-users at lists.freeswitch.orghttp://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-usershttp://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
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20151120/9b103fda/attachment-0001.html 