[Freeswitch-users] advise to troubleshoot a call

Wed Apr 24 15:39:52 MSD 2013

There is a nice lua-gui-plugin for qos on openwrt. It is layer-7 based. You
just select sip (not sure for rtp) and you can perform qos. I use it for
sip at home. No problems up till now. Another way could be use the linux
sip-conntrack, but I'm not sure completely how this would work without
looking at it. It would be a related port (rtp) and you would need to use
the -j DSCP-option in the output-mangle-table (-t mangle).

Anyway, the easiest and quickest solution is to install the qos-gui-plugin
for openwrt. Very easy ...

Michel

On Wed, Apr 24, 2013 at 1:11 PM, Philippe Le Toquin <philippe at ppmt.org>wrote:

>  Hi
>
> The only "peer to peer" would be skype but she is not using it while on
> the phone and in any case that is only for messaging
>
> I have a router with openwrt but never got the QOS to work. I tried to
> read about it and got scared :)
>
> In any case I thought my link would be good enough.
>
>
>
> On 13-04-24 06:47 AM, Guillermo Ruiz Camauer wrote:
>
> Are you sure that there are no peer to peer or other network programs
> competing for outbound bandwidth when she is talking?  Does your router
> have any way of prioritizing SIP and RTP or penalizing other protocols?
>
> Sent from my iPhone
>
> On 24/04/2013, at 00:43, Michael Collins <msc at freeswitch.org> wrote:
>
>     pcapsipdump ftw!
>
>  Check it out:
> http://wiki.freeswitch.org/wiki/Packet_Capture#pcapsipdump
>
>  It gets pcaps for you and separates each call into its own file with both
> signaling and media. Find the pcap with a bad phone call and open that one
> up in Wireshark for analysis.
>
>  -MC
>
>
> On Tue, Apr 23, 2013 at 6:30 PM, Philippe Le Toquin <philippe at ppmt.org>wrote:
>
>>  Hi Sean and Michel
>>
>> Thanks for your input.
>>
>> I did try the test and they came back as all good saying I should get
>> good quality (my link 10Mbps download, 1Mbps upload)
>> The MOS score is reported as 4.2
>>
>> What I didn't find is what you mention about 1, 3 or 5 lines.
>>
>> I will continue looking...
>>
>>
>> On 13-04-23 05:45 PM, Michel Brabants wrote:
>>
>> RTCP provides you normally with statistics that can help you. I didn't
>> check it in freeswitch yet, but there is an option to enable it (not
>> standard apparently?) in the profile. One step further is rtcp-xr which can
>> provide mos-score, but with all of this, the receiving endpoint should also
>> support this.
>>
>> Kind regards,
>>
>> Michel
>>
>> On Tue, Apr 23, 2013 at 10:51 PM, Sean Devoy <sdevoy at bizfocused.com>wrote:
>>
>>>  Philippe,
>>>
>>> The audio is sent through UDP packets, not TCP packets.  The main
>>> difference is that if UDP packets are lost in collisions or congestion,
>>> they are not retransmitted.  What you are describing COULD be completely
>>> explained as internet congestion.
>>>
>>>
>>>
>>> I would test with some application that loads her network link down.
>>> One example is http://www.onsip.com/tools/voip-test
>>>
>>>
>>>
>>> Try the various levels (1 line, 3 or 5 lines) and see how a call with
>>> her reacts when the test are run.  That will at a minimum rule out
>>> congestion on her local internet connection.
>>>
>>>
>>>
>>> HTH,
>>>
>>> Sean
>>>
>>>
>>>
>>> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
>>> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Philippe
>>> Le Toquin
>>> *Sent:* Tuesday, April 23, 2013 4:12 PM
>>> *To:* FreeSWITCH Users Help
>>> *Subject:* [Freeswitch-users] advise to troubleshoot a call
>>>
>>>
>>>
>>> Hello,
>>>
>>> Recently I (well my wife) is having voice problem when she is on a call.
>>>
>>> Typically  she can hear people but they can't
>>>
>>> The problem is that it is not all the time and when it happens it last a
>>> few seconds then all back to normal... then later on it happens again.
>>>
>>> I am still in the process of trying to find if there is a pattern in the
>>> problem but I would like to be able to look at the log from FS.
>>>
>>> What would you recommend to be able to look at the log (what debug
>>> level).
>>>
>>> Any tips to make it easier to identify an issue in the log (like message
>>> to look for?)
>>>
>>>
>>>
>>> Thanks
>>>
>>> Philippe
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> 
>>> 
>>>
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>>> http://www.freeswitch.org
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>>>
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>>>
>>
>>
>> _________________________________________________________________________
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>>
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>>
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>>
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>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
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>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
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>>
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>>
>
>
> --
> Michael S Collins
> Twitter: @mercutioviz
> http://www.FreeSWITCH.org
> http://www.ClueCon.com
> http://www.OSTAG.org
>
>
> _________________________________________________________________________
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> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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>
>
>
> _________________________________________________________________________
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>
> FreeSWITCH-powered IP PBX: The CudaTel Communication Server
>
> Official FreeSWITCH Siteshttp://www.freeswitch.orghttp://wiki.freeswitch.orghttp://www.cluecon.com
>
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>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
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>
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