NEC UX5000 Hardware Manual page 192

Chapter 3 - Installing Extensions and Trunks
To Central
Office
25-Pair
Cable
3 - 10
One-Pair
Telco
Xconnect
RJ21X
Loop Start
DID
Ground Trunk
Tie Line
2-Pair
Xconnect
Figure 3-6: TYPICAL TRUNK/LINE INSTALLATION
Line
"A1" Block
8 Loop
Start Lines
4 DID
Trunks
Not
used
8 Ground
Start
Trunks
Bridging Clips
Line
"A2" Block
4 Tie
Trunks
Bridging Clips
25-Pair
Cable
To RJ-61
25-Pair
Cable
Connector
on Blade
To RJ-61 Connector on Blade
Chapter 3