Nt6d42 ringing generator dc – Nortel Networks Circuit Card User Manual
Page 114

Page 114 of 906
Option settings
553-3001-211 Standard 3.00 August 2005
NT6D42 Ringing Generator DC
Tables 22 through 27 list option settings for the NT6D42 Ringing Generator.
Table 22
NT6D42 recommended options for North American and British Telecom
Application
Ringing
frequency
Ringing
voltage
Jumper locations
Ringing output
North America
20 Hz
86 V ac
P5
High voltage
message waiting
Low impedance
British Telecom
25 Hz
80 V ac
P4
No high voltage
message waiting
Low impedance
Table 23
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 24
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
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