Re: Bellcore LATA

[JPR3]

In a message dated 2/28/2002, Alex McNeil writes:


> I am not too familiar with the North American requrements:
> Our customer has requested Surge Protection testing to the Bellcore LATA
> Switching General Requirements.  600 Vpk metallic, and 2500 Vpk
> longitudinal. 
> 
> 1. Are you familiar with this spec?
> 2. Are these requirements covered in any of the Regulatory Telecomms or
> Safety specs or is our Customer wanting something beyond the regulatory
> requirements?
> 3. How can I get a copy of this standard?
> 


Hi Alex:

These requirements are described in Telcordia (formerly Bellcore) document 
GR-1089 CORE, "Electromagnetic Compatibility and Electrical Safety - Generic 
Criteria for Network Telecommunications Equipment."  It can be purchased from 
the Telcordia web site at http://www.telcordia.com/.

GR-1089 is not a regulatory requirement.  It is simply an industry 
specification that can be called out on a customer specification.  In the 
USA, compliance with GR-1089 is typically required by the major network 
operators for equipment that will be used in their central offices.  Anyone 
else can also call out GR-1089 on a purchase specification if they choose to 
do so.

In general, the lightning requirements in GR-1089 are more severe than those 
ITU K.20 or EN 300 386.  Even more significant is the difference in power 
cross tests, which are much more severe in GR-1089 than the tests called out 
in K.20 or EN 300 386.

While compliance with GR-1089 can be challenging and may add slightly to the 
cost of your interface circuits, it does provide a reasonable guarantee that 
the equipment will have very few field failures due to lightning and power 
induction.  This makes it an attractive specification for customers to call 
out on a purchase specification.


Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848
http://www.randolph-telecom.com

RE: Bellcore LATA

[John Juhasz]

Alex,

Go to the following link for Telcordia (formerly Bellcore)
and click on 'Document Center'. 
The LSSGR (Lata Switiching Systems Generic Requirements) are
available from there.
http://telecom-info.telcordia.com/site-cgi/ido/index.html

John Juhasz
Fiber Options
Bohemia, NY

-Original Message-
From: Alex McNeil [mailto:alex.mcn...@ingenicofortronic.com]
Sent: Thursday, February 28, 2002 10:08 AM
To: emc-p...@majordomo.ieee.org
Subject: Bellcore LATA




Hi Group,

I am not too familiar with the North American requrements:
Our customer has requested Surge Protection testing to the Bellcore LATA
Switching General Requirements.  600 Vpk metallic, and 2500 Vpk
longitudinal. 

1. Are you familiar with this spec?
2. Are these requirements covered in any of the Regulatory Telecomms or
Safety specs or is our Customer wanting something beyond the regulatory
requirements?
3. How can I get a copy of this standard?


Kind Regards
Alex McNeil
Principal Engineer
Tel: +44 (0)131 479 8375
Fax: +44 (0)131 479 8321
email: alex.mcn...@ingenicofortronic.com


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