Installing Did Trunks; Did Trunks (Figure 3-7) - NEC Aspire S Manual

Section 3: Installing Extensions and Trunks

INSTALLING DID TRUNKS

DID Trunks (Figure 3-7)

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 PCB and an RJ-61 jack. The line (A) block should be arranged in groups of
2 DID trunks (4 pins) to correspond with the cabinet slot equipped with a DIOPU PCB.
Installing DID Trunks
1.
2.
3.
4.
5.
3-12 ◆ Section 3: Installing Extensions and Trunks
Punch down one pair cross-connect to
the tip and ring leads for each DID
trunk on the CPE (customer) side of
the RJ21X.
Punch down the other end of the cross-
connect to the line (A) block tip and
ring leads.
Punch down a 25-pair cable to the
opposite side of the line (A) block.
Plug in the corresponding RJ-61 con-
nector to the DID PCB connector.
Install bridging clips on the A block.
Note: Repeat steps 1-5 for each DID
trunk. Label cross-connect blocks
A2, A3, etc.
One-Pair
Telco
Xconnect
RJ21X
2 DID
Trunks
DID Trunks
1-2
Not used
2 DID
DID Trunks
Trunks
3-4
Bridging Clips
Figure 3-7: INSTALLING DID TRUNKSI
Aspire S Hardware Manual
Line
"A" Block
25-Pair
Cable
DIOPU PCB
DIOPU PCB