[Freeswitch-users] How to inspect the jitterbuffer?

Anthony Minessale anthony.minessale at gmail.com
Sat Feb 11 00:24:24 MSK 2012

That made no sense in regards to my last message.

I asked you to try particular wanpipe parameters, so you should try
them and restart your wanpipe and report the results.
Your MTU is very high and may cause timing issues for interop with voip.

set MTU to 80 (10ms)
set IDLE_FLAG to 0xFF (send the 255 byte on idle stream)

1) Turn off FreeSWITCH
2) wanrouter stop
3) wanrouter start
4) start FreeSWITCH

You are pushing RTP up against TDM, RTP can start and stop, TDM
cannot, When there is no RTP the TDM will carry on sending the
IDLE_FLAG byte over the wire.

I made both the RTP stack and the TDM endpoint from scratch so you
should assume I may have some insight.

On Fri, Feb 10, 2012 at 12:28 PM, Holger Freyther <holger at freyther.de> wrote:
> Anthony Minessale <anthony.minessale at ...> writes:
>> If there is no RTP then the TDM should be generating its own audio.
>> Try
>> MTU           = 80
>> IDLE_FLAG     = 0xFF
> Writing about audio is difficult. Imagine one says the word "Two"..
> and one called a mailbox. Opening the file in audacity gives you
> the wave of what you said, you zoom in and you see that in the
> middle of the word the the amplitude is zero for a bit (where it
> should not be zero). As echoing works on FreeTDM, there is no packet
> loss in RTP, the bug has the whole audio... it means something is
> broken in FreeSWITCH to get the audio to FreeTDM in time?
> Any ideas?
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Anthony Minessale II

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