NEC UX5000 Hardware Manual page 139

Trunk I/F Circuit #2
Trunk I/F Circuit #1
CN2(COIU)
Analog Trunk
From Central Office
for Interface Circuit.
#1-#4
CN3
SLT I/F for
Power Failure
Transfer
#1-#2
BUSY LED
(Status for Trunk Lines)
ON: Trunk in Use
OFF: Idle
LIVE LED
(Status LED)
Chapter 2
Trunk I/F Circuit #3
Trunk I/F Circuit #4
CN5
Pin Number
Location
8
7
6
5
2
1
Figure 2-28:
Chapter 2 - Blade Installation and Startup
CN4
CN1
Common
Control
Circuit
CN2(COIDB)
Analog Trunk
From Central Office
for Interface Circuit.
Trunk I/F Circuit #4
#5-#8
4COIDB BLADE
Daughter Board I/F
(for COIU/082U)
Trunk I/F Circuit #1
Trunk I/F Circuit #2
Trunk I/F Circuit #3
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