[asterisk-r2] Random channels receive BLOCK Rx CAS after each wanrouter restart

Wed Feb 2 23:29:04 CST 2011

I can't guarantee nothing changed, but the system has been under normal
callcenter operation 7 days a week with no issues. Customer doesn't even
have root access to the server, nor they have a clue about Asterisk. All
they do is unplug the E1 when it fails, then plug it back after issue gets
solved.

One day I received an email where they began to notice "interference noise"
over the calls. I first thought it was an analog gateway problem (the one
agents use to connect to Asterisk), but later today when I was able to test
the system the noise was coming from the E1 itself, as I made Elastix call
my cell and playback a sound file and the noise was there.

Tomorrow I should be able to request they plug the E1 back again at about
20:00 GMT-6 and have a time window of about 40-60 min, in case you are
interested in seeing the odd behaviour for yourself.

   Christian Cabrera

On Wed, Feb 2, 2011 at 23:13, Moises Silva <moises.silva at gmail.com> wrote:

> Are you sure nothing changed? not even the card changed from pci slot?
> or adding a new hard drive or anything alike?
>
> Check if the card interface has overruns when that happens (ifconfig
> tells you that).
>
> Moises Silva
> Senior Software Engineer
> Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON
> L3R 9R6 Canada
> t. 1 905 474 1990 x128 | e. moy at sangoma.com
>
>
>
> On Thu, Feb 3, 2011 at 12:07 AM, Christian Cabrera <ccabrera at gmail.com>
> wrote:
> > Oops, misspell. I meant Wanpipe 3.5.18, the most current stable version
> as I
> > checked today
> >
> >
> > On Wed, Feb 2, 2011 at 23:05, Moises Silva <moises.silva at gmail.com>
> wrote:
> >>
> >> You are on a quite old version of wanpipe, several RBS related bugs
> >> were fixed after that. Can you upgrade?
> >>
> >> Moises Silva
> >> Senior Software Engineer
> >> Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON
> >> L3R 9R6 Canada
> >> t. 1 905 474 1990 x128 | e. moy at sangoma.com
> >>
> >>
> >>
> >> On Wed, Feb 2, 2011 at 10:37 PM, Christian Cabrera <ccabrera at gmail.com>
> >> wrote:
> >> > Hello,
> >> > One of my customers is experiencing something really weird: at bootup,
> >> > random channels from his E1 appears with a RxC CAS of "BLOCK". If I
> >> > restart
> >> > wanrouter, then the channels randomly switch but we never get the 30
> >> > channels as IDLE at the same time.
> >> > System was working fine, then they reported some noise was getting
> into
> >> > the
> >> > lines. Now the E1 won't even take calls. I've posted a pastebin of
> what
> >> > the
> >> > dahdi_tool looks like after restarting wanrouter several times (each
> >> > time
> >> > channels get random block/idle status). The url
> >> > is http://pastebin.com/xGB3XCTE
> >> > The specs of what I'm using:
> >> > Asterisk 1.4.36
> >> > Dahdi 2.4.0
> >> > Wanpipe 3.5.8
> >> > Sangoma AFT-A101c  : SLOT=0 : BUS=48 : IRQ=177 : CPU=A : PORT=PRI :
> V=25
> >> > E1 is from Axtel
> >> > Ballum has been changed to dismiss the chance of that being the
> problem.
> >> > Dahdi_tool reports no alarms and when trying to dial out, a timeout
> >> > occur (I
> >> > can see the mfcr2 debug in the console and I get no ring on the
> >> > destination
> >> > phone).
> >> > As a side note: the E1 gets conencted into an standard PBX and works
> >> > fine:
> >> > no noise nor anything bad happens. As soon as I get it into Asterisk,
> >> > weird
> >> > things start to happen.
> >> > Could the card have gone bad? Let me know what can I do to debug as
> for
> >> > obvious reasons the E1 stays connected into the Alcatel during all
> work
> >> > hours.
> >> > Regards,
> >> >    Christian Cabrera
> >> >
> >> > --
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