Page 134 of 894 Option settings
553-3001-211 Standard 2.00 September 2004
QPC43 Peripheral Signaling card
QPC71 E&M/DX Signaling and Paging Trunk cards
Options (minimum vintage N) Plug location
NT5D21 Core/Network module
NT8D35 Network module
F13
Application
Unit 0 E35 switch Unit 1 E5 switch
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
E&M off off off on off off on off off off off on off off on off
Paging off off off off off off off off off off off off off off off off
DX 2-wire
(conductor
loop <
2.5 K ¾)
on on off off off on off on on on off off off on off on
DX 2-wire
(conductor
loop >
2.5 K ¾)
on on on on off on off on on on on on off on off on
DX 4-wire
(conductor
loop <
2.5 K ¾)
off off off off on on off on off off off off on on off on
DX 4-wire
(conductor
loop >
2.5 K ¾)
off off on on on on off on off off on on on on off on
Note: DX trunks must be balanced correctly. If the loop is <2.5 K ¾, far-end balancing is
standard. If the loop is >2.5 K ¾, far end balancing requires standard plus 2.5 K ¾. To connect
PBX to PBX, switches should be arranged for loops to be >2.5 K ¾ at one end and <2.5 K ¾ at
the other. Apply similar treatment when connecting to Pulse QPJ69 trunks.