[asterisk-ss7] Error in t1_timeout (arg=0x8180078) at chan_ss7.c:765 makes asterisk crash

[Kristian Nielsen]

Anton <anton.vazir at gmail.com> writes:

> Could you also give us any clue why AudioLost with the 
> following error message happens
>
> Mar 20 15:48:39 NOTICE[22448]: chan_ss7.c:1880 ss7_write: 
> Write buffer 
> full on CIC=38 (wrote only 0 of 160), audio lost.
>
> and where to look for that to fix?

If you have jitter (for example a SIP <-> SS7 gateway), a small amount
of these are normal. To solve that, you need a jitter buffer (or maybe
increase the number of buffers on audio circuit devices, at the cost of
latency).

If you get _lots_ of these, it would seem to indicate a problem with the
codec somewhere earlier on the audio path, sending more than the 8000
samples/second required by alaw/ulaw. This needs to be solved outside of
chan_ss7.

 - Kristian.