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Nortel Networks Circuit Card Manuel D’Utilisation

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 Page 149 of 906
QPC551 Radio Paging Trunk card
Signal duration on the 18-pair faceplate
S1 (F33)
       
1
2
3
4
5
6
Binary value (.1 second)
1
2
4
8
16
32
Note: This switch determines the length of time a signal stays on the 18-pair data bus. The time 
is set in binary to the nearest tenth second. For example, to keep data on the bus for 5 seconds, 
the switch settings total 50 by closing S1.2, S1.5, and S1.6.
Signal duration and pause time 
S2 (G33)
1
2
3
4
5
6
7
Binary value (.1 second)
1
2
4
8
16
32
64
Note: This switch determines the time data must stay on the 18-pair data bus plus the pause 
time between the removal of data and the reappearance of subsequent data. The time is set in 
binary to the nearest tenth second. For example, to keep data on the bus for 5 seconds and have 
a pause time of 3.2 seconds, the switch settings should total 82 by closing S2.2, S2.5, and S2.7.
Application
S3 (E2) S4 (F2) 
Unit 0, Unit 1
1
2
Address
3
4
5
6
Address
3
4
5
6
Paging
0
off
off
off
off
8
off
off
off
on
single
on
1
on
off
off
off
9
on
off
off
on
multiple
off
2
off
on
off
off
10
off
on
off
on
3
on
on
off
off
11
on
on
off
on
Timer*
4
on
off
on
off
12
on
off
on
on
enabled
on
5
on
on
on
off
13
on
off
on
on
disabled
off
6
off
on
on
off
14
off
on
on
on
7
on
on
on
off
15
on
on
on
on
*
When enabled, this switch prevents a signal from being sent from a paging unit until 5 seconds have 
elapsed since the beginning of the previous signal on that same unit.
S5 (E38)
Unit 0
S6 (D1) 
Unit 1
Impedance termination
1
Real
on
Complex
off