NEC UX5000 Hardware Manual page 107

CN2(4SLIU)
SLT Line Interface
#1-#4
BUSY LED
(Status for
Trunk Lines)
ON: Trunk(s) in Use
OFF: Idle
LIVE LED
(Status LED)
Chapter 2
Pin Number
Location
8
7
6
5
Daughter Board I/F
2
1
(for SLIDB)
RJ61
Connector
Figure 2-21: 4SLIU PCB - COMPONENT SIDE VIEW
Chapter 2 - PCB Installation and Startup
Common
Control
Circuit
CN1
CN2(4SLIDB)
SLT Line Interface
#9-#12
Daughter Board I/F
(for 4/8SLIU)
2 - 41