asterisk users - Jun 2006 - IAX jitter / clocking problem

hello, I'm still trying to tune iax jitterbuffer in asterisk 1.2.9.1, 
but without success,
I'm using idefisk->asterisk over cdma network, where rtt is about 
100-500ms, so jitter about 400ms
but sound is very jerky, in diection idefisk->asterisk, in reverse 
direction is sound relatively smoth,
so, my question:
has iax same problem as in sip/rtp, where packets are generated along 
incomming packets (what is probably solved in trunk with:
http://bugs.digium.com/view.php?id=5374
0005374: [patch] Asynchronous generation of outgoing frames when timing 
device available

my iax jitterbuffer settings (iax.conf):
[general]
jiterbuffer=yes
forcejitterbuffer=yes
maxjitterbuffer=1500
resyncthreshold=-1

thanks for suggestions ;-)
PJ

Pavel Jezek wrote:
> hello, I'm still trying to tune iax jitterbuffer in asterisk 1.2.9.1, 
> but without success,
Here is my entries:

jitterbuffer=yes
dropcount=3
maxjitterbuffer=1000
maxjitterinterps=10
maxexcessbuffer=80
resyncthreshold=1000
minexcessbuffer=10
jittershrinkrate=1


-- 
 
Ben Franklin quote:

"Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety."

I found my mistake jiterbuffer=yes vs. jitterbuffer=yes  ;-)
currently I have this settings, and seems this working quite well,
only sometimes gaps appears, when jitter changes too much eg. >500ms - 
jitterbuffer probably can't adapt so quick,
maybe good idea to set some minimum jitterbuffer value, but this is not 
possible in current new jitterbuffer implemenation
PJ

jitterbuffer=yes
forcejitterbuffer=yes
maxjitterbuffer=1500
maxjitterinterps=10
resyncthreshold=2000



Pavel Jezek wrote:
> hello, I'm still trying to tune iax jitterbuffer in asterisk 1.2.9.1, 
> but without success,
> I'm using idefisk->asterisk over cdma network, where rtt is about 
> 100-500ms, so jitter about 400ms
> but sound is very jerky, in diection idefisk->asterisk, in reverse 
> direction is sound relatively smoth,
> so, my question:
> has iax same problem as in sip/rtp, where packets are generated along 
> incomming packets (what is probably solved in trunk with:
> http://bugs.digium.com/view.php?id=5374
> 0005374: [patch] Asynchronous generation of outgoing frames when 
> timing device available
>
> my iax jitterbuffer settings (iax.conf):
> [general]
> jiterbuffer=yes
> forcejitterbuffer=yes
> maxjitterbuffer=1500
> resyncthreshold=-1
>
> thanks for suggestions ;-)
> PJ
>
>
>
>
>
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