Trunk Blades; Analog Trunk (4Coiu) Blade (Figure 2-30) - P/N 0911072 - NEC ux5000 Hardware Manual

S 2-7
ECTION

Trunk Blades

2.7.1
Analog Trunk (4COIU) Blade (Figure 2-30)
The 4COIU is used to provide 4 ports for loop/ground start trunks. The blade can accept a 4COIDB to provide
an additional 4 ports (refer to 2.7.2 Analog Trunk (4COIDB) Daughter Board (Figure 2-31) - P/N 0911074 on
page 2-66).
The COIU blade provides:
4 analog loop start/ground start trunk circuits
●
● 1 trunk status LED
1 blade status LED
●
4 Caller ID Circuits
●
2 Power Failure Transfer Circuits
●
Connection for COIDB Daughter Board
●
Trunk I/F Circuit #3
Trunk I/F Circuit #4
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 #2 Trunk I/F Circuit #1
CN5
Pin Number
Location
8
7
6
5
2
1
Figure 2-30:
Chapter 2 - Blade Installation and Startup
- P/N 0911072
CN4
CN1
Common
Control
Circuit
CN2(COIDB)
Analog Trunk
From Central Office
for Interface Circuit.
#5-#8 Trunk I/F Circuit #1
4COIU BLADE
Daughter Board I/F
(for COIU/082U)
Trunk I/F Circuit #4
Trunk I/F Circuit #3
Trunk I/F Circuit #2
2 - 63