Nortel 1000 Installation And Commissioning Manual page 170

170 Clock Controller description and installation
System
* 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
Half Group, Single Group
Multi Group
Table 67
Clock Controller switch settings for NTRB53
Multigroup/ Machine
Single group Type # 1
1
Multigroup
61, 51C, 61C
= Off
71, 81, 81C
Single group =
On
Copyright © 2003-2007, Nortel Networks
.
1
SW2
ON
OFF
Faceplate
Cable Length
(CC to CC)
2 3
Off
= On
Off
On
On
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
SW1
2 3 4 1
*Cable length between the
J3 faceplate connectors:
0–4.3 m (0–14 ft)
4.6–6.1 m (15–20 ft)
6.4–10.1 m (21–33 ft)
10.4–15.2 m (34–50 ft)
SW3
OFF
OFF
Side Number
4
Off 0-14 ft Side 0 = On
Side 1 = Off
On 15-20 ft
Off 21-33 ft
On 34-50 ft
SW2 SW4
2 3 4 1 2
SW4
ON
ON
Machine
Type #2
5
81 = Off
51, 51C
61, 61C, 81C =
On
3 4
off off
on
off
on
off
on on
6