Re: [Linphone-users] Packet Size Control

[Dragos D]

Yes, it is about ptime and I am looking into the code now... :-)

2011/12/13 Mike Dawson <address@hidden>:
> Dear Dragos,
>
> Does this relate to the ptime parameter?  Is there somewhere specific to
> start looking in the code for this?
>
> http://lists.gnu.org/archive/html/linphone-developers/2010-09/msg00032.html
>
> or more possibly even:
> http://www.mail-archive.com/address@hidden/msg01231.html
>
>
> Many Thanks,
>
> -Mike
>
> 2011/12/13 Dragos D <address@hidden>
>>
>> I'll have to check the code...
>>
>> On Dec 13, 2011 10:51 AM, "Mike Dawson" <address@hidden> wrote:
>>>
>>> Hi Dragos,
>>>
>>> Thanks for the reply there - so is there a parameter that would be used
>>> for that in .linphonerc - I checked over the docs
>>>
>>> http://www.linphone.org/eng/documentation/dev/tuning-linphone.html
>>>
>>> Is there something to go in the rtp section or do I have to add to the
>>> protocol sections?
>>>
>>> Many Thanks,
>>>
>>> -Mike
>>>
>>> 2011/12/13 Dragos D <address@hidden>
>>>>
>>>> You don't increase the frame size,  you just pack more encoded frames in
>>>> rtp.
>>>> Dragos
>>>>
>>>> On Dec 13, 2011 8:47 AM, "Mike Dawson" <address@hidden> wrote:
>>>>>
>>>>> Dear All,
>>>>>
>>>>> I have a situation that I think might be common: I want to run SIP
>>>>> sessions over a VPN.  I am using mostly the speex codec.  The VPN is
>>>>> running over UDP and the issue is that with a small packet being sent
>>>>> more frequently the packet overhead is increasing bandwidth usage 2-3x.
>>>>>
>>>>> So what would be helpful would be to pass a parameter to the codec to
>>>>> try and increase the frame size so that fewer larger packets go out
>>>>> (and
>>>>> reduce the overhead loss).
>>>>>
>>>>> I noticed:
>>>>>
>>>>>
>>>>> http://lists.gnu.org/archive/html/linphone-developers/2010-04/msg00078.html
>>>>>
>>>>> But not sure if that applies to audio only - looks like according to
>>>>> speex doc this should be possible:
>>>>>
>>>>> http://www.speex.org/docs/manual/speex-manual/node13.html
>>>>>
>>>>> Does anyone have any hints on where to look for module parameters or
>>>>> what to do if they don't yet exist - I guess I would have to modify
>>>>> some
>>>>> source.
>>>>>
>>>>> Many Thanks,
>>>>>
>>>>> -Mike
>>>>>
>>>>> 14:24:08.996504 IP user2-Aspire-S3.local.36666 >
>>>>> static.1.2.3.4.clients.your-server.de.openvpn: UDP, length 141
>>>>> 14:24:08.996647 IP6 fe80::76de:2bff:fe3d:7b08.mdns > ff02::fb.mdns: 0
>>>>> PTR (QM)? 254.255.128.10.in-addr.arpa. (45)
>>>>> 14:24:08.996792 IP user2-Aspire-S3.local.36666 >
>>>>> static.1.2.3.4.clients.your-server.de.openvpn: UDP, length 125
>>>>> 14:24:08.996825 IP user2-Aspire-S3.local.mdns > 224.0.0.251.mdns: 0 PTR
>>>>> (QM)? 254.255.128.10.in-addr.arpa. (45)
>>>>> ^C14:24:09.096979 IP ASUS.local.63816 > 239.255.255.250.1900: UDP,
>>>>> length 133
>>>>>
>>>>>
>>>>> 14:24:56.316471 IP user1-Satellite-A300.local.7078 >
>>>>> user2-Aspire-S3.local.7078: UDP, length 18
>>>>> 14:24:56.341113 IP user2-Aspire-S3.local.7078 >
>>>>> user1-Satellite-A300.local.7078: UDP, length 58
>>>>> 14:24:56.345263 IP user1-Satellite-A300.local.7078 >
>>>>> user2-Aspire-S3.local.7078: UDP, length 18
>>>>> 14:24:56.355261 IP user1-Satellite-A300.local.7078 >
>>>>> user2-Aspire-S3.local.7078: UDP, length 18
>>>>> 14:24:56.362484 IP user2-Aspire-S3.local.7078 >
>>>>> user1-Satellite-A300.local.7078: UDP, length 58
>>>>>
>>>>>
>>>>>
>>>>>
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