Ensure that cable distance and rate limits meet IEEE-recommended
maximum speeds and distances for signaling purposes. For information
about attenuation and power loss in optical fiber cables see:
ANSI T1.646a-1997 Telecommunications – Broadband
ISDN - Physical Layer Specification for User-Network Interfaces Including
DS1/ATM (1997)
ANSI T1.646-1995 Telecommunications – Broadband
ISDN - Physical Layer Specification for User-Network Interfaces Including
DS1/ATM (1995)
Ensure that power cables deliver sufficient power to the
system.
Attach laser fiber connectors only to Class 1 laser devices
in accordance with IEC 60825-1, Safety of Laser Products - Part 1.
Route cables so that they do not restrict ventilation
or airflow.
Route cables so that modules and field-replaceable units
are easily accessible.
Route cables in a logical direction to prevent loss of
connectivity to other equipment in the rack, associated equipment
in adjacent racks, or to the backbone network.
Consider using cable-management brackets to keep network
cables untangled and orderly and to prevent cables from hindering
access to other slots.
For specifications on cables for line modules, see the E120 and E320 Module Guide.
For additional cable recommendations, consult the document GR-63–CORE:
Network Equipment Building System (NEBS) Requirements: Physical Protection,
Issue 2, April 2002.
