nanog mailing list archives

RE: T1 short-haul vs. long-haul


From: "Michel Py" <michel () arneill-py sacramento ca us>
Date: Sat, 24 Jul 2004 14:13:42 -0700


Michel Py wrote:
I stopped by a T1 MPOE on my way home and took a few photos.

Michael Loftis wrote:
hate to say it but what is pictured is not a smart jack,
it is as you say a glorified patch.

Care to post a photo of what you think a smartjack is?

a *TRUE* smart jack DOES have the tiny bit of circuitry
necess'y to cause it to loop the line back when nothing
is connected to it, some can do it via line signaling as well.

This feature is part of the NIU. What makes the jack smart is that it's
connected to a smart NIU (the older full-height type 400 were not
smart).

Michel.


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