12-Port Ds3 Fp Line Connections; 12-Port Ds3 Fp Cable Assemblies - Nortel Passport 15000 Hardware Description

12-port DS3 FP line connections

You can connect the lines (ports) of this DS3 FP directly to the far end
network equipment or another DS3 FP, or indirectly through the 12-port
fanout panel NTHW52 or the one-for-six 12-port sparing panel NTQS31.
Refer to "Termination panels for FPs" (page 291) for the description,
function, and capabilities of the panels.
The connections can also be made to equivalent non-Nortel Networks
equipment provided the cabling criteria are met.
When connecting a DS3 to a fanout panel, up to three DS3 8W8-to-BNC
cable assemblies are required. When connecting a DS3 to a one-for-six
sparing panel, up to three DS3 8W8-to-8W8 mini-coax cable assemblies are
required from each FP. To operate the sparing panel, a single DS3 DB9
sparing control cable assembly is required.

12-port DS3 FP cable assemblies

Passport 15000 or 20000 uses mini-coax cables that are high-density 75-ohm
BNC cables with 8W8 and BNC connectors. Each 8W8 connector is
D-shaped with eight connections, four pairs of transmit (Tx) and receive (Rx)
connections for four ports. Each 12-port DS3 FP accommodates three 8W8
connectors, labeled P0, P1, and P2. (Some 4-port DS3s have only one 8W8
connector.) The other end of the cable can have either
• another 8W8 connector intended for connection with sparing panel
NTQS31
• a corresponding series of 8 standard BNCs intended for connection with
a fanout panel (for example, NTHW52)
The maximum cable distance for DS3 lines to customer premises equipment
(CPE) is 137 m (450 ft). The distance between the FP and the sparing panel
or fanout panel is part of the total length.
Note: The insertion loss of the mini-coax cables is approximately double
that of standard NT-734 cable, which will affect the maximum cable
distance.
A 12-port DS3 uses three 4-port cable assemblies and three control port
cables.
Chapter 4 Control and function processors 187
Passport 15000, 20000 Hardware Description 5.2S2