Nortel Networks NN43001-301 manual Clock Controller switch settings for QPC775 System

170Clock Controller description and installation

SW1

SW2

SW4

System

1

3

4

1

2

3

4

1

2

3

4

2

*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/

Machine

Faceplate

Side Number

Machine

Single group

Type # 1

Cable Length

Type #2

(CC to CC)

1

2

3

4

5

6

Multigroup

61, 51C, 61C

Off

Off

0-14 ft

Side 0 = On

81 = Off

= Off

71, 81, 81C

Side 1 = Off

51, 51C

Single group =

= On

61, 61C, 81C =

On

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