[Asterisk-Users] Red Alarm

[Don Pobanz]

> > 	Sometimes I receive a Red Alarm in my E1 trunk (E&M immediate
> > 	start
> > signaling), and just few seconds after this, all alarms are 
cleared.
> >
> > 	This problem ocurrs many times/day, and if are calls in progress,
> > these calls just hang-up.
> > 	Could it be an asterisk bug? Or may I contact the PSTN provider?
>
> I'd suggest your telco doing loopup and checking the circuit.
>

You also need to verify that you are using loop timing and not internal 
timing. (Your telco will provide timing)

in zaptel.conf you should have something like
span=1,1,0,ccs,hdb3,crc4
where the second 1 says to use the timing from the incoming E1 line.

Don Pobanz