[asterisk-users] No audio on Zap (T1/PRI) channels

[Steve Edwards]

On Wed, 3 Oct 2007, Steve Edwards wrote:

> I have 12 T1's going into 3 servers, 4 in each into "Digium, Inc. Wildcard
> TE410P Quad-Span togglable E1/T1/J1 card 3.3v (rev 02)" cards.
>
> Each "group" of T1's have the primary D on 24 and the secondary D on 96.
>
> The first server (ts20) and the last server (ts22) can playback
> "demo-congrats" fine. The "middle" server (ts21) cannot -- just dead air.
>
> If I call via ZAP, dead air. If I call via IAX, I hear the file.
>
> I copied /etc/zaptel.conf, /etc/asterisk/*,
> /var/lib/asterisk/sounds/demo-congrats.gsm from ts20 to ts21 -- no joy.
>
> I have seen this in my system log file:
>
> Oct 2 18:41:49 WARNING[7477]: chan_zap.c:8087 zt_pri_error: [Span 0
> D-Channel 0] PRI: !! Got reject for frame 95, but we have nothing --
> resetting!
>
> I'm running asterisk-1.2.24, asterisk-addons-1.2.7, libpri-1.2.5,
> zaptel-1.2.20.1.
>
> "show channel zap/?," "zap show channel ?" appear identical between
> working and non-working systems both "on-hook" and "off-hook."
>
> Any clues or clues where to start looking?

Turning on "pri debug span 1" yields:

Oct 3 10:39:17 WARNING[20586]: channel.c:780 channel_find_locked: Avoided 
initial deadlock for '0xb7c202f0', 9 retries!

on the host that doesn't work for every call received.

Thanks in advance,
------------------------------------------------------------------------
Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                             Fax: +1-760-731-3000