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DETAILED SECTION DESCRIPTIONS
PCBs
2.4.4. NCU (Europe/Asia)
S H U N T
T 1
TIP
R I N G
R 1
G S
JP24
GS Sw.
S H U N T
N.C
T 1
R 1
N.C
G S
1. Control Signals and Jumpers
CSEL0
Country
CN2-4
Germany
Holland
Austria
Italy
Spain
Ireland
Finland
Switzerland
Other
L: Low, H: High
CML Relay
(16Hz)
Current
Sensor
C N 5
C N 7
CSEL1
CN2-5
CN1-13
L
H
L
H
L
H
L
L
L
L
H
L
L
H
L
H
L
H
2-52
Filter
DO Sw.
Loop Closure
Circuit
OHDI Sw.
Ring
Detection
Circuit
RSEL
JP24
H
S
H
S
H
S
L
S
L
S
L
S
L
S
L
O
L
S
S: Short, O: Open
June 10th, 1997
R I T O N E
T R X D
D O S W
O H D I S W
C M L S W
Hook0
Hook1
G S S W
C S E L 0
C S E L 1
R S E L
ExRing
H523D551.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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