Re: (PM) Line1 to Line1 (or maybe just a dumb question) (fwd)

Dick St.Peters (stpeters@NetHeaven.com)
Wed, 24 Jun 1998 18:41:42 -0400

> >You are batting a 1000 in the wrong direction MZ. Telcos are actually
> >transparent to the span. the end equipment is responsible for overall
> >timing on a point to point link.
>
> Now this is confusing - I've worked with people doing PTP with IRX units
> and CSU/DSUs where clock was coming from the telco and BOTH CSU/DSUs were
> set to 'network' for clock. It worked, and the units were seeing a clock.

The first internal (POP-to-POP) T1 I had (still have) ran for nearly a
year with both ends set to take clock from the network. However, it
ran cleaner when someone finally clued me in that I was supposed to be
supplying clock at one.

When there's data on the line, clocking seems to be unnecessary - at
least with Adtran TSUs.

Question for Kyle: We'll finally have frame here soon. Is it true
that frame supplies the clocking - or are frame "lines" still
transparent?

--
Dick St.Peters, stpeters@NetHeaven.com 
Gatekeeper, NetHeaven, Saratoga Springs, NY, 1-800-910-6671 (voice)
Saratoga/Albany/Amsterdam/BlueMountain/BoltonLanding/Cobleskill/
Greenwich/GlensFalls/LakePlacid/NorthCreek/Plattsburgh/...
	  Oldest Internet service based in the 518 area code


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