NEC UX5000 - Page 153

Chapter 2 - Blade Installation and Startup
Chapter 2 2 - 67
Figure 2-31: 4COIDB BLADE
CN2(COIU)
Analog Trunk
From Central Office
for Interface Circuit.
#1-#4
CN3
SLT I/F for
Power Failure
Transfer
#1-#2
CN1
CN4
Trunk I/F Circuit #4
Daughter Board I/F
(for COIU/082U)
CN5
Common
Control
Circuit
BUSY LED
(Status for Trunk Lines)
ON: Trunk in Use
OFF: Idle
LIVE LED
(Status LED)
Pin Number
Location
8
7
6
5
2
1
CN2(COIDB)
Analog Trunk
From Central Office
for Interface Circuit.
#5-#8
Trunk I/F Circuit #3
Trunk I/F Circuit #2
Trunk I/F Circuit #1
Trunk I/F Circuit #1
Trunk I/F Circuit #2
Trunk I/F Circuit #3
Trunk I/F Circuit #4