[Freeswitch-users] Getting multicast paging to work

Thu Jan 21 02:05:07 MSK 2016

the G.729 sessions are point-to-point (destination address
172.18.18.215), so they are not relevant to multicast traffic.

You need to open the capture in Wireshark and force it to treat port
8000 as RTP, Then you will see what kind of codec is used for
multicast.

On Wed, Jan 20, 2016 at 8:02 PM, Varsha Agarwal <vagarwal at vertical.com> wrote:
> Working pbx shows G.729 in wireshark, here is what I see on the working pbx
> 1235    2016-01-19 13:05:56.024053000   172.18.18.215   239.192.0.2     UDP     294     Source port: 16468  Destination port: 8000
> 1236    2016-01-19 13:05:56.024089000   172.18.18.215   172.18.7.67     RTP     74      PT=ITU-T G.729, SSRC=0xD2ECCEA9, Seq=10, Time=2880
> 1237    2016-01-19 13:05:56.030450000   172.18.7.67     172.18.18.215   RTP     74      PT=ITU-T G.729, SSRC=0x4BF0F35E, Seq=6, Time=1280
> 1238    2016-01-19 13:05:56.050338000   172.18.7.67     172.18.18.215   RTP     74      PT=ITU-T G.729, SSRC=0x4BF0F35E, Seq=7, Time=1440
> 1239    2016-01-19 13:05:56.055168000   172.18.18.215   239.192.0.2     UDP     294     Source port: 16468  Destination port: 8000
>
> It is different on FreeSwitch
> 1140    36.313847000    172.18.18.237   239.192.0.2     UDP     214     Source port: 28080  Destination port: irdmi
> 1141    36.313946000    172.18.18.237   224.0.1.116     UDP     388     Source port: snap  Destination port: commplex-link
> 1142    36.326208000    172.18.7.105    172.18.18.237   RTP     214     PT=ITU-T G.711 PCMU, SSRC=0x24A22162, Seq=16, Time=2880
> 1143    36.331901000    172.18.18.237   239.192.0.2     UDP     214     Source port: 28080  Destination port: irdmi
>
> How do I change codec settings?
>
>
> -----Original Message-----
> From: freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Bote Man
> Sent: Tuesday, January 19, 2016 11:14 PM
> To: 'FreeSWITCH Users Help'
> Subject: Re: [Freeswitch-users] Getting multicast paging to work
>
> If it is possible to capture both the FreeSWITCH multicast stream and the working PBX multicast stream and compare them, I suspect that you will discover the difference.
>
> "The packets sent are *always* converted to G.711 mu-Law / PCMU (8khz) because some phones (Snom for example) won't accept other codecs via multicast", so if your phones are looking for something else that could account for it.
>
> Hope this helps.
>
>
> ---
> Bote
>
> FreeSWITCH Docs Janitor
> http://freeswitch.org/confluence
>
>
>
>
>
>> -----Original Message-----
>> From: Varsha Agarwal
>> Sent: Tuesday, 19 January, 2016 01:18
>> Subject: Re: [Freeswitch-users] Getting multicast paging to work
>>
>> Thanks. I will capture this. I wanted to find out if there is
>> something phone/codec specific not set here that is there in the log
>> and I am not catching. Basically in my network there is another PBX
>> setup that is able
> to do
>> multicast paging but FreeSwitch is not able to. So there is something
> specific
>> to my Freeswitch setup. I also did not find too much documentation on
>> the ESF module. I am relatively new to the SIP world.
>>
>
>
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