Nortel Networks 1000M User Manual

Page 34

Cabinet system equipment

Table 3
Multi and Single-mode glass optical cable requirements for distances up to 3 km (1.8 mi)

Parameter

Minimum

Typical

Maximum

Units

Glass Fiber Cable
Length

3.0

Cable Attenuation
@1300 nm

1.5 (multi-mode)

0.5 (Single Mode)

2.0 (multi-mode)
0.7 (Single Mode)

dB/km

Modal Bandwidth
@1300 nm

200

500

MHz * km

Chromatic Dispersion
@1300 nm

ps/nm * km

Typical 3 dB Optical
Bandwidth

180

MHz * km

The fiber link is limited to a maximum length of 3 km. To guarantee reliable
operation, a bandwidth of 150% should be maintained. If the link is
increased beyond the 3 km length the 150% margin is deteriorated possibly
resulting in link malfunction under some conditions.

Table 4 "Cabinet system

miscellaneous cables and wires" (page 34)

lists miscellaneous cables and

wires used with the Chassis system.

Table 4
Cabinet system miscellaneous cables and wires

Cable and wire

Purpose and description

A0632902 Fiber-optic cable (multi-mode plastic)

Connects a main and expansion chassis by
interfacing with a fiber expansion daughterboard
and a Fiber Receiver card.
Length: 10 m (33 ft)

A0632902 Fiber-optic cable (multimode plastic)

Connects a main and expansion cabinet by
interfacing with a fiber expansion daughterboard
and a Fiber Receiver card.
Length: 10 m (33 ft)

NE-A25B 25-pair cable

Connects Intelligent Peripheral Equipment
cards to the cross-connect terminal. NE-A25B
connectors are on the back of each cabinet.

Note 1: This cable is available in different versions, depending on local EMC specifications.

Note 2: These cables are not supported under EMC specifications VL43.140P.

Nortel Communication Server 1000

Communication Server 1000M and Meridian 1 Small System Installation and Commissioning

NN43011-310

01.04

Standard

Release 5.0

13 May 2008