Nortel Circuit Card 311 Reference page 90

90 Option settings
Table 21
NT6D42 recommended options for North American and British Telecom
Application
North America
British Telecom
Table 22
NT6D42 jumper locations P4 and P5
High voltage message waiting
Disable
Enable
Note: One jumper must be installed.
Table 23
NT6D42 jumper location J7
Ringing output
Low impedance (normal)
High impedance (Australia)
Table 24
NT6D42 SW1
Ringing frequency (Hz)
Copyright © 2003-2008, Nortel Networks
.
Ringing Ringing
frequency voltage
20 Hz 86 V ac
25 Hz 80 V ac
20
25
50
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Jumper locations
P5
High voltage
message waiting
P4
No high voltage
message waiting
Pin location
Jumper in P4
Jumper in P5
Jumper location J7
Connect pins 1 and 2
Connect pins 2 and 3
Position SW1
1
2
3
Ringing output
Low impedance
Low impedance