3Com 7000 manual Cabling Requirements, Installing New Cabling

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CABLING REQUIREMENTS

This appendix addresses many aspects of installing optical fiber cabling to support the CoreBuilder® 7000 family ATM switch environment. It also deals with modem cables and Ethernet and control cables for management. The following topics are covered:

■Installing New Cabling

■ATM Cabling

■Ethernet Cabling

Installing New

Cabling

Cable Labeling and Record Keeping

If you are installing new cabling, follow these guidelines:

■3Com recommends that you use a cabling system plan, such as AT&T's Premises Distribution System (PDS) or the IBM Cabling System.

■Determine how many CoreBuilder 7000 units are going to be supported by each wiring closet, and how many downlink connections from these CoreBuilder 7000 units are planned.

■Locate wiring closets to enable connections to the different floors.

■To simplify installation of the network and to aid in troubleshooting, install a telephone in each wiring closet for communication between wiring closets, work areas, and other locations.

■Include all linear distances (vertical rises, etc.) in the cable plan so that all cables - from wiring closet to desk and to other wiring closets - are under their respective maximum lengths.

A reliable cable labelling and record keeping system is essential when planning any network installation. A good cable labelling system provides enough information for you to locate the opposite end of any cable. Maintaining accurate records helps you to:

■relocate devices easily