[Asterisk-Users] How to fix a Blue Alarm?? Line Noise?

[Geoff Manning]

Jon Pounder wrote:
>> Bruce Ferrell wrote:
>> 
>>> You need to be looking at a "lower" level
>> 
>> Like hw/cabling errors?? If so, that's what I was afraid of for cost
>> reasons.
> 
> no - the stuff you found relates to configuring one 64k channel of
> the T1, you need to find the settings to configure the overall t1.
> 
> - someone mentioned the encoding settings - its not that or you would
> be getting more than just a blue alarm, it would not be working
> period. 
> 
> - you need to look for clock source settings, and set those.
> 
> have your asterisk t1 card generate the clock on the asterisk TX side
> for sure. it sounds like the pbx just generates its own tx clock
> based on the rx data which is what you want (that might be faulty who
> knows). if it can generate its own tx clock from a crystal try that
> instead and see if it helps.
> 

Thanks Jon. I'm not savvy enough in this arena to completely understand your
suggestions.

I have the asterisk t1 card providing the timing as I understand it:
span=1,0,0,d4,ami

I found these settings on the legacy PBX as well, not sure if they mean
anything:

drop pulse: 014
pause time: 005s
flash time: 025*50ms
Orbit recall: 120*10s


Do these relate to /etc/asterisk/zapata.conf settings like so:

; A variety of timing parameters can be specified as well
; Including:
;    prewink:     Pre-wink time (default 50ms)
;    preflash:    Pre-flash time (default 50ms)
;    wink:        Wink time (default 150ms)
;    flash:       Flash time (default 750ms)
;    start:       Start time (default 1500ms)
;    rxwink:      Receiver wink time (default 300ms)
;    rxflash:     Receiver flashtime (default 1250ms)
;    debounce:    Debounce timing (default 600ms)
;    emdigitwait: Time to wait for DID digits on E&M links (default 250ms)
(Increase to 500
;                 or so if you are not getting all DID digits on your E&M
link)

Thanks,
Geoff