Atm Cabling - 3Com CoreBuilder 7000 Installation & Start?Up Manual

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110
PPENDIX ABLING

ATM Cabling

R
EQUIREMENTS
make changes quickly
isolate faults in the distribution system
Consult the cabling system plan to set up the cable labeling and record
keeping system best suited to the environment. Also consider the
following recommendations:
Identify cables by securely attaching a label to the ends of all cables.
Draw a floor location grid matrix using the building floor plans. For
easy reference, use this grid when assigning location numbers to
cables.
Assign a unique block of sequential numbers to the group of cables
that run between each pair of wiring closets.
Assign a unique identification number to each distribution rack.
Make all work areas and wiring closets easy to identify by labeling the
front panel of the CoreBuilder 7000 and other hardware and by
displaying the floor location grid and cabling plan in each wiring
closet.
Keep accurate and up-to-date cable identification records, such as
IBM's Cable Identification Label Sheet or Cable Schedule. Post records
near each distribution rack. On the appropriate cable schedule, record
the following cable drop information: the cable source, destination,
jumper location, and any additional information.
Make sure that optical and coax cables are labeled Rx and Tx
accordingly.
When planning the installation, thoroughly inspect the present cabling to
determine if it meets the specifications in the cabling system or standards
used at the site.
In addition to adhering to the local standards, all cable must conform to
the American National Standard ATM Physical Layer Medium Dependent
(PMD) standard, ISO.166-1990, American National Standards Institute,
which defines the Physical Medium Dependent (PMD) layer of the ATM
network. Currently, there are two approved PMD standards: Multi-mode
Fiber (MMF-PMD), which is defined in ANSI standard X.3-166-1992, and
Single Mode Fiber (SMF-PMD), which is defined in ANSI standard
x.3-184-198x.