Re: (PM) PRIs from Different Telcos

Roy (garlic@garlic.com)
Wed, 14 Apr 1999 14:46:06 -0700

The error display would show CRC errors, bipolar errors, etc. Since you
aren't seeing any on the PM-3, I doubt any clock error. The clock is
the DATA RATE (1.544 Mbps) and not the exact sampling time for any
particular line.

Tim Tsai wrote:
>
> > : This is probably a clock error. On a PM3, line1 is synchronized to
> > :the clock of line0 - since these are different Telco's, you are probably
> >
> > Yah but ALL telco's clock to a single source, dont they?
>
> Yes but I do not know what happens when one switch is much farther from
> another one, for example. I remembered seeing something about this on
> the list awhile back.
>
> Tim
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