[asterisk-users] Detected alarm on channel 3: Red Alarm

[Shaun Ruffell]

On Tue, Jan 05, 2016 at 02:36:42PM +0000, Ryan, Travis wrote:
> > -----Original Message-----
> > From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> > bounces at lists.digium.com] On Behalf Of Vitor Mazuco
> > Sent: Tuesday, January 05, 2016 9:21 AM
> > To: Asterisk Users Mailing List - Non-Commercial Discussion
> > Subject: [asterisk-users] Detected alarm on channel 3: Red Alarm
> > 
> > Hi everyone!
> > 
> > I have a Digium Card TDM410
> > 
> > But, it appear for me this massege
> > 
> > chan_dahdi.c:8061 handle_alarms: Detected alarm on channel 3: Red Alarm
> > 
> > But my line is ok!
> > 
> > But sometimes it back
> > 
> > sig_analog.c:3807 analog_handle_init_event: Alarm cleared on channel 2
> > 
> > But it again back to red alarm.
> > 
> > What can be happen?
> > 
> > My lines is all ok! But when I put on Digium Card TDM410 is very
> > inconsistent
> > 
> > Thanks
> > 
>
> Honestly, I've only had red alarms on any of my cards if there was
> a problem with the lines or service over those lines. Maybe
> someone else could speak to other reasons the red light might
> appear.

The red alarm on the analog cards, like the TDM410, appear when the
card does not detect a sufficient battery voltage from the central
office.

Typically this will happen when the cable is disconnected from the
card, there is something flaky in the connection with the central
office, a filter is causing a voltage drop, etc..

One thing to check is that the 'opermode' module parameter is set
for the country that you're in, if you're not in the United States
or Canada.

-- 
Shaun Ruffell
Digium, Inc. | Linux Kernel Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org