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DETAILED SECTION DESCRIPTIONS
PCBs
2.4.5. NCU (Europe/Asia)
SHUNT
T1
TIP
RING
R1
GS
JP24
GS Sw.
SHUNT
T1
TIP
RING
R1
GS
1. Control Signals and Jumpers
Country
Germany
Holland
Austria
Italy
Spain
Ireland
Finland
Switzerland
Other
L: Low, H: High
CML Relay
Current
Sensor
CN5
CN7
CSEL0
CSEL1
CN2-4
CN2-5
L
H
L
H
L
H
L
L
L
L
H
L
L
H
L
H
L
H
Filter
(16Hz)
DO Sw.
Loop Closure
Circuit
OHDI Sw.
Ring
Detection
Circuit
RSEL
JP24
CN1-13
H
S
H
S
H
S
L
S
L
S
L
S
L
O
L
O
L
S
S: Short, O: Open
2-64
August 2nd, 1995
TRXD
DOSW
OHDISW
CMLSW
Hook0
Hook1
GSSW
CSEL0
CSEL1
RSEL
ExRing
H516D534.wmf
CN5
CN7
O
O
O
O
O
O
O
O
O
O
S
S
O
O
O
O
O
O
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