Thanks for the heads-up, Jim.
Joe
-----Original Message-----
From: JIM WIESE [mailto:jim.wi...@adtran.com]
Sent: Monday, April 28, 2003 3:37 PM
To: NEBS FORUM (E-mail)
Subject: Intra-building Lightning
This is simply a NEBS FYI regarding a new technical update posted by Verizon
regarding the Exemption to testing intra-building lightning requirements in
section 4.5.9 of GR-1089-CORE Issue 2 and 4.6.9 of GR-1089-CORE issue 3.
Per Verizon, they do not permit intra-building interfaces to utilize shields
grounds on both ends if the equipment may be installed in a C.O. Thus this
exemption is not permitted within Verizon. Many vendors currently use this
exemption to eliminate the need to test for lightning on interfaces such as
10/100 baseT Ethernet and Giga-bit Ethernet.
Verizon has still not accepted Issue 3, but it is still under review,
however IF they do accept issue 3, they will not allow manufacturers to
exempt the test and state in the I&M's that the shield must be grounded at
both ends. The requirement in issue 2 is the same as issue 3 , however
documenting the grounding at both ends is not required as part of the lab
evaluation for conformance. Issue 3 simply requires (in addition to the
issue 2 requirements) that manufacturers are required to document that they
must have both ends grounded if they use the exemption.
See attached for more info: http://www.verizonnebs.com/technical.html
<http://www.verizonnebs.com/technical.html>
Jim
Jim Wiese
NEBS Project Manager/Senior Compliance Engineer
ADTRAN, INC.
901 Explorer Blvd.
P.O. Box 140000
Huntsville, AL 35814-4000
256-963-8431
256-963-8250 fax
jim.wi...@adtran.com
