[asterisk-users] speech gaps with iax2

[Pavel Jezek]

I'm not using ztdummy (and no digium hw) on my iax asterisk boxes, can it be source of my issue with gaps in speech over iax?
Is ztdummy really needed for simple iax-iax interconnection (i.e. not trunking config)?
PJ

Aug  5 13:06:31 WARNING[7456]: chan_iax2.c:9658 load_module: Unable to open IAX timing interface: No such file or directory




Pavel Jezek wrote:
> I'm using iax2 interconnection between two asterisk (1.2.9.1) boxes,
> also using jitterbuffer, because this is over cdma, codec ilbc
> jitterbuffer is working fine, except some gaps in speech....
> I experimented with resyncthreshold, buffer size but no improvement :-(
> is there any way, to force jitterbuffer to stay at some size and not 
> automaticly resize?
> my cdma connection is not so bad quality, rtt 120-1500ms, but no 
> packet loss
> PJ
>
>
> my iax2.conf jiterbuffer part:
> [general]
> jitterbuffer=yes
> forcejitterbuffer=yes
> maxjitterbuffer=3000
> maxjitterinterps=15
> resyncthreshold=-1
>
>
>
> here is iax jb debug output, gaps appear whan debug shows blank space 
> (what mean letters L, l, G,s)? ....
>
>
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvLLlLLlLLLLLlllLlLL
> lLGllLlllllVLlVLlVG
>
>
>
>
>
> VvGvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvsvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvsvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvLGlvvvLlLlLLllLLlLlLLGlLlLlLLLlllllVLlVLlVL
> lVLlVLlVGCLI>
>
>
>
>
>
> Vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvLvvvvvLvvLvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvsvvvvvvvvvvvvvvvvvsvvv
> vvvvvvvvvvvvvvsvLlLSLlLlLlLlLLLllLLlLlLLllLLGlllll
> lVLlVGsk*CLI>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvLLvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
> vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
>
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