[asterisk-users] Fwd: Re: PRI - DS3 Calls Dropped

[bob_is_me at cox.net]

That is exacly what is happening. The 50ms interruption is disturbing everything up to the chan_zap level, even though I have supressed the yellow alarms. 

> Date: Thu, 2 Aug 2007 23:58:11 -0400 (EDT)
> From: Alex Balashov <abalashov at evaristesys.com>
> To: Asterisk Users Mailing List - Non-Commercial Discussion
	<asterisk-users at lists.digium.com>
> Subject: Re: [asterisk-users] PRI - DS3 Calls Dropped
> 
> 
> I think one critical aspect to explore here is, what exactly is meant by 
> "drop the DS3 service to redundant back-ups"?
> 
> SONET protection switching inside their transport core should not impact 
> your DS3s or voice-bearing T1s if it is within the 50 ms tolerance of
> the standard.  I imagine some SONET line equipment even jitter-buffers
> to account for this sort of thing, although that is speculation.
> 
> Or is there another form of "back-up" involved?  What is it?
> 
> --
> Alex Balashov
> Evariste Systems
> Web    : http://www.evaristesys.com/
> Tel    : +1-678-954-0670
> Direct : +1-678-954-0671
> 
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