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North American Network Operators Group
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Re: T1 short-haul vs. long-haul
- From: Pete Templin
- Date: Wed Jul 21 10:39:16 2004
Robert Boyle wrote:
You can travel up to 655 ft. with a T1 cable from the NTU which the
phone company will drop at your site. According to the letter of the
specs, you are supposed to use "T1 cable" two 22AWG pairs individually
shielded to prevent cross-talk. In practice, we have extended DMarcs up
to 200-300 feet with regular Cat 3/4/5/6 cable and have never had any
problems or out of spec. cross-talk as a result.
Kentrox used to have a white paper regarding demarcation extensions.
They indicated that regular Cat 3/5 cable could likely be used to
1000-2000 feet, and individually-shielded twisted pair cable could go
6000 feet. As noted above, crosstalk is normally the critical factor in
the distance "game".
pt
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