[asterisk-users] RED on DAHDI channel

[Mitch Claborn]

I am running 2.6.1. I'll give the 2.6.y a try.


Mitch

On 05/28/2013 10:53 AM, Shaun Ruffell wrote:
> On Mon, May 27, 2013 at 12:14:41PM -0500, Mitch Claborn wrote:
>> Asterisk 11.1
>>
>> We have a situation where one of our incomings POTS lines will not
>> answer.  There are 2 lines configured by the Telco as a rollover
>> group (rings the line that is not busy) and they feed into a Digium
>> AEX410 on the server.  The most recent time this happened, I did a
>> /etc/init.d/dahdi status and saw this:
>>
>> ### Span  4: WCTDM/1 "Wildcard AEX410"
>> *53 FXO        FXSKS       (EC: VPMOCT032 - INACTIVE)  RED*
>>   54 FXO        FXSKS       (EC: VPMOCT032 - INACTIVE)
>>   55 FXO        FXSKS       (EC: VPMOCT032 - INACTIVE)  RED
>>   56 FXO        FXSKS       (EC: VPMOCT032 - INACTIVE)  RED
>>
>> 55 and 56 are always red - there is nothing plugged into those
>> ports.  53 and 54 are the active lines.  I restarted dahdi
>> (/etc/init.d/dahdi stop then start) and it started working again,
>> and the RED on 53 was gone.
>>
>> Is there something else I can do to try and figure out what is going
>> on, and maybe how to prevent it?
>
> Hi Mitch,
>
> What version of DAHDI are you using? Unfortunately I did insert a
> bug on 2.6.0 where it was possible for a channel on an AEX410 to get
> stuck in RED alarm depending on the timing from the central office.
> If you're not using 2.6.0+ you can ignore the remainder of this
> email.
>
> The bug was fixed in 2.6.2 in "wctdm24xxp: Eliminate chance for
> channel to be stuck in RED alarm." [1] but unfortunately, that fix
> had a problem of it's own which was fixed in "wctdm24xxp: Fix FXO
> failure to detect battery CO disconnects." [2]. This just means
> there isn't currently a release of the 2.6 branch that contains all
> the recommended fixes.
>
> If you were on the 2.6 branch, then I advise installing the current
> tip of the 2.6.y branch like:
>
>    $ git clone git://git.asterisk.org/dahdi/linux dahdi-linux -b 2.6.y
>    $ cd dahdi-linux
>    $ make install
>
> [1] http://git.asterisk.org/gitweb/?p=dahdi/linux.git;a=commit;h=41639330a59
> [2] http://git.asterisk.org/gitweb/?p=dahdi/linux.git;a=commit;h=160edc8c9db
>
> If you don't have git installed on the machine you would like to
> install this on, you can use the 'snapshot' link when looking at the
> shortlog of the 2.6.y branch at git.asterisk.org [3] which will
> allow you to download a tar.gz file.
>
> [3] http://git.asterisk.org/gitweb/?p=dahdi/linux.git;a=shortlog;h=refs/heads/2.6.y
>