[asterisk-ss7] chan_ss7.c:1889 ss7_write: Write buffer full on CIC=1 (wrote only 0 of 160), audio lost.

[Mr.Surender Reddy]

Dear sir,
             I have installed with Asterisk latest version Zaptel and all
with new version still iam getting this error *chan_ss7.c:1889 ss7_write:
Write buffer full on CIC=1 (wrote only 0 of 160), audio lost. Is there any
way to make my serice better.*
**
*regards*
*surender*

On 5/11/06, Jacob Tinning <tinning at sifira.dk> wrote:
>
> On Wed, 10 May 2006, Anton wrote:
>
> > The same with me. I did _particularry_ decreased that, by
> > interconnecting 2 asterisk boxes over IAX2 with
> > jitterbuffer enabled. Maybe implementing JB in chan_ss7
> > will help elliminating that.
>
> Actually, the "Write buffer" is a kind of jitter-buffer. It is inside the
> zaptel driver and is initialized by chan_ss7 to 4 * 160 bytes (80ms)
>
> You can increase it to some other multiple of 160, but it requires a
> recompile,
> and will also increase the audio-delay.
>
> I've once read about an algorithm to a dynamic jitterbuffer, which whould
> "expand" itself when it runs full, and shrink after some time.
>
> Maybe it would be a good idea to make some experimental implementations of
> such a buffer..
>
> Mvh. Jacob
>
> --
> Jacob Tinning
> System Developer                                           SIFIRA A/S
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