[VoiceOps] Timing slips on subrate DS1s on CT3

[Alex Balashov]

On 03/08/2014 10:21 AM, Jared Smith wrote:
> On Sat, Mar 8, 2014 at 12:42 AM, Alex Balashov
> <abalashov at evaristesys.com <mailto:abalashov at evaristesys.com>> wrote:
>
>     The T3's timing is logically independent of the subrate channels.
>     The T3 is configured to take clock from the line. But the timing on
>     the subrate DS1s should be identical, since they're all on the same
>     DS3, right?
>
>
>  From my understanding, not necessarily.  I remember years ago having a
> DS3 with the individual DS1s connected to three or four different telcos
> (we were shopping around at the time).  The DS1s from one upstream telco
> had slightly different timing than a DS1 from another telco.

Oh, yeah--well, that makes sense. I meant if all the channels on the 
DS3, and the DS3 itself, is coming from the same network element on the 
carrier side. Presumably that box has a global timing signature for 
everything it puts out.

-- 
Alex Balashov - Principal
Evariste Systems LLC
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