Nortel Networks 1000 User Manual
Page 88
88
Option settings
Application
Ringing
frequency
Ringing
voltage
Jumper locations
Ringing output
message waiting
British Telecom
25 Hz
80 V ac
P4
No high voltage
message waiting
Low impedance
Table 22
NT6D42 jumper locations P4 and P5
High voltage message waiting
Pin location
Disable
Jumper in P4
Enable
Jumper in P5
Note: One jumper must be installed.
Table 23
NT6D42 jumper location J7
Ringing output
Jumper location J7
Low impedance (normal)
Connect pins 1 and 2
High impedance (Australia)
Connect pins 2 and 3
Table 24
NT6D42 SW1
Ringing frequency (Hz)
Position SW1
20
1
25
2
50
3
Table 25
NT6D42CB SW2
SW2
Ringing
voltage
Message waiting
voltage
1
2
3
4
86 V ac
–120 V dc
off
off
off
off
86 V ac
–150 V dc
off
off
off
on
80 V ac
–120 V dc
on
off
off
off
80 V ac
–150 V dc
on
off
off
on
75 V ac
–120 V dc
off
on
off
off
75 V ac
–150 V dc
off
on
off
on
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.