[Ekiga-list] Receiving SIP RTP before media description [was ekiga answers with delay ...?]

[Craig Southeren]

On Mon, 27 Nov 2006 10:26:58 +0100
Damien Sandras <dsandras at seconix.com> wrote:

..deleted

> > My guess is that OPAL/Ekiga is not playing the audio until the first
> > H.261 packet is received. I can't think why this would be happening -
> > I'll need a level 4 trace log from OPAL before I can determine why this
> > would be happening.
> > 
> 
> The problem is that OPAL opens the media streams when sending/receiving
> the ACK and that opening the media streams (soundcard and so on) on a
> GNU/Linux system takes about 2 seconds.

Why does it take so long?

> See the attached output.txt :
> 2006/11/27 10:24:10.110   0:13.862      SIP Handle...er:843fa00 SIP
> Sending PDU on udp$172.16.100.198:5060<if=udp$172.16.100.166:5062>
> ACK sip:444 at 172.16.100.198 SIP/2.0^M
> 
> (10:24:10.110)
> 
> Then :
> 2006/11/27 10:24:11.256   0:15.008      SIP Handle...er:843fa00 OpalCon
> Media stream threads started.
> 2006/11/27 10:24:11.257   0:15.009      SIP Handle...er:843fa00 OpalCon
> Media stream threads started.
> 
> (We are 1 second later)

What is OPAL doing during the one second gap? 

Are there any log messages?

> [...]
> 2006/11/27 10:24:11.261   0:15.013      SIP Handle...er:843fa00 OpalMan
> OnEstablished
> Call[1]-EP<sip>[e6a8d8b4-667c-db11-8a96-00c09f2d8163 at golgoth01]
> 2006/11/27 10:24:11.261   0:15.013      SIP Handle...er:843fa00 Call
> OnEstablished
> Call[1]-EP<sip>[e6a8d8b4-667c-db11-8a96-00c09f2d8163 at golgoth01]
> 2006/11/27 10:24:11.274   0:15.026      SIP Handle...er:843fa00 SIP
> Awaiting next PDU.
> 2006/11/27 10:24:11.276   0:15.028      Media Patc...h:b5e38f18 RTP
> Jitter buffer length exceeded
> 2006/11/27 10:24:11.276   0:15.028      Media Patc...h:b5e38f18 RTP
> Jitter buffer length exceed was prior to first write. Not increasing
> buffer size

    Craig

-----------------------------------------------------------------------
 Craig Southeren          Post Increment – VoIP Consulting and Software
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