[asterisk-users] hangup problem on T1 span

[Stephen J Alexander]

Tzafrir,

Thanks for your response. I'll check into those items.

Regards,

Stephen J Alexander
MPBX, LLC
http://mpbx.com
832-713-6729


On Thu, May 3, 2012 at 4:39 AM, Tzafrir Cohen <tzafrir.cohen at xorcom.com>wrote:

> On Wed, May 02, 2012 at 11:18:54AM -0500, Stephen J Alexander wrote:
> > Hello all,
> >
> > I'm trying to solve a problem on a T1 span setup wherein calls are
> > apparently not hanging up properly.
>
> CAS or PRI?
>
> >
> > The system in question is using a Xorcom Astribank with 1 full and 1
> > partial T1 span, and running Asterisk 1.4.36.
> >
> > The symptom is that when a call hangs up on a DAHDI channel (according to
> > Asterisk), and another outgoing call tries to open a new channel on the
> > same line as the hung-up call within approximately a minute of the
> hangup,
> > the new call gets a congestion notice ("all circuits busy") from
> > asterisk. After about a minute passes after the hangup, the line becomes
> > available again. So it seems like the channels are not hanging up when
> > Asterisk tells them to, and Asterisk doesn't know it.
> >
> > I suspected a signaling issue, and this appeared confirmed when I
> > discovered that the signalling was set in chan_dahdi.conf as "fxs_ks"
> (this
> > installation had been converted from analog lines by another company; I
> > guess that was an oversight?).
>
> The signalling and such is probably set in
> /etc/asterisk/dahdi-channels.conf so that setting does not matter.
>
> >
> > So I changed it to pri_cpe, as my reading of the docs indicated was
> proper.
> > After this change and restarting everything, though, the symptoms
> persist.
> > So I figure that either my reading of the docs is wrong (and therefore
> > pri_cpe is not the right signaling) OR something totally unrelated is
> going
> > on.
> >
> > Can someone please clue me in here? I am a bit at a loss. Let me know if
> > you need further information about the system/environment.
>
> What is the output of 'dahdi show channel N' for one such a "bad"
> channel when not in a call? Are you sure it's not in a call? See the
> output of 'core show channels'.
>
>
> --
>               Tzafrir Cohen
> icq#16849755              jabber:tzafrir.cohen at xorcom.com
> +972-50-7952406           mailto:tzafrir.cohen at xorcom.com
> http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>               http://www.asterisk.org/hello
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120503/f1030a26/attachment.htm>