NEC UX5000 - Installing DID Trunks; DID Trunks (Figure 3-10)

Chapter 3 - Installing Extensions and Trunks
Chapter 3 3 - 15
SECTION 3-10
INSTALLING DID TRUNKS
3.10.1 DID Trunks (Figure 3-10)
Direct Inward Dialing trunks must be bridged from the telco RJ21X to a line cross-connect (A) block. Each DID
Trunk requires one-pair cross-connect from the RJ21X to the line (A) block.
The A block connects to the DID blade and an RJ-61 jack. The line (A) block should be arranged in groups of 4
DID trunks (8 pins) or 8 DID trunks (16 pins) to correspond with the chassis slot equipped with a DIOPU blade.
Installing DID Trunks
Figure 3-10: INSTALLING DID TRUNKSI
Bridging Clips
4 DID
Trunks
8 DID
Trunks
One-Pair
Xconnect
DID Trunks
5-12
Not used
DID Trunks
1-4
DIOPU PCB
Line
"A" Block
Tel c o
RJ21X
25-Pair
Cable
DIOPU PCB