
2.4.4. NCU (USA)
1. Jumpers
Item
Description
JP5
These jumpers should be shorted when the machine is connected to a dry
line.
JP6
Ring Detect
OHDISW
TIP
RING
T1
R1
T1
R1
TRXD
Current
Sensor
ExDI
Hook1
Hook0
24
V
OHDISW
24V
Ext. Tel
DP/Off-Hook
Detection
Relay
NCU
JP5
JP6
ExRing
H516D533.wmf
August 2nd, 1995
DETAILED SECTION DESCRIPTIONS
PCBs
2-63