Nortel Networks NN43001-301 - Manual (Page 170)

170 Clock Controller description and installation
SW1 SW2 SW4
System 1 2 3 4 1 2 3 4 1 2 3 4
*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.
Table 66
Clock Controller switch settings for QPC775
System SW2 SW3 SW4
Half Group, Single Group ON OFF ON
Multi Group OFF OFF ON
Table 67
Clock Controller switch settings for NTRB53
Multigroup/
Single group
Machine
Type # 1
Faceplate
Cable Length
(CC to CC)
Side Number Machine
Type #2
1 2 3 4 5 6
Multigroup
= Off
Single group =
On
61, 51C, 61C
71, 81, 81C
= On
Off Off 0-14 ft Side 0 = On
Side 1 = Off
81 = Off
51, 51C
61, 61C, 81C =
On
Off On 15-20 ft
On Off 21-33 ft
On On 34-50 ft
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.