November 28th, 1995
2.3.5. NCU (USA)
TIP
RING
T1
R1
T1
R1
1. Jumpers
Item
JP5
These jumpers should be shorted when the machine is connected to a dry
line.
JP6
Current
Sensor
JP6
NCU
24V
Relay
Description
2-23
DETAILED SECTION DESCRIPTIONS
JP5
OHDISW
24
V
Ring Detect
Ext. Tel
DP/Off-Hook
Detection
PCBs
TRXD
OHDISW
Hook0
Hook1
ExRing
RI TONE
ExDI
OML SW
H505D520.wmf