Hi Tracy,

I also want to test the voice quality under different ptime parameter. 
Would you advise how to change QoS information, so that I make a longer RTP 
(ie.. lower bandwidth) ?

rgds,
Anthony

> From: [email protected]
> To: [email protected]
> Date: Wed, 27 Nov 2013 00:41:30 +0000
> Subject: [Linphone-users] limiting RTP size
> 
> Hi
> 
> I have been running some tests with Linphone running on a wireless laptop as 
> an extension of a NEC Univerge SV8100 PABX. For the tests I've used the G.711 
> codec.
> 
> Linphone is smart in that it changes the packet size based on QoS 
> information, however it appears that the PABX ignores RTP packets of 534bites 
> or longer, ie Ptime=60 or greater.
> Is it possible to limit the Ptime/packet size?  I've tried setting the 
> Maximum Transmission Unit to 512 but this was ignored.
> 
> Regards,
> 
> Mr Tracy Briscoe
> Network Engineer
> 
> St Peter's School, Cambridge, Private Bag 884, Cambridge 3450, New Zealand
> P +64 7 827 9899 ext 254  l  F +64 7 827 9812
> www.stpeters.school.nz
> 
> 
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