110 Option settings
Unit 0 jumper (Location E27)
Unit 1 jumper (Location E11)
Unit 2 jumper (Location D29)
Unit 3 jumper (Location D9)
Jumper: Unit 0
Jumper Unit 1
Jumper Unit 2
Jumper Unit 3
Jumper
600 3/4resistive impedance Pin 1 to 2 Pin 1 to 2 Pin 1 to 2 Pin 1 to 2
3-component complex impedance Pin 2 to 3 Pin 2 to 3 Pin 2 to 3 Pin 2 to 3
QPC471 Clock Controller card

Table50 "QPC471 vintage H" (page 110) lists option settings for the

QPC471 Clock Controller card.

Tabl e 50
QPC471 vintage H
SW1 SW2 SW4
System 1 2 3 4 1 2 3 4 1 2 3 4
61C on on on on off off off off off on **
81 off off off off off off off off off on **
81C on off off off off off off off ** on **
81C with Fiber Network on off off off off off off off ** on **
*Cable length between the J3
faceplate connectors:
0–4.3 m (0–14 ft) off off
4.6–6.1 m (15–20 ft) off on
6.4–10.1 m (21–33 ft) on off
10.4–15.2 m (34–50 ft) on on
*If there is only one Clock Controller card in the system, set to OFF. If there are two Clock Controller
cards, determine the total cable length between the J3 connectors (no single cable can exceed 25
ft.) and set these two switch positions for this cable length, as shown above. The maximum total
(combined) length is 50 ft. Set the switches on both cards to the same settings.
**Set to ON for clock controller 0. Set to OFF for clock controller 1.
Note: FNF based-systems the total clock path length is equal to the length of the NTRC49 cable
used to connect between the two clock controller cards.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.