NEC DSX-160 - Making a T1;E1;PRI Crossover Cable

Installing Cards
40 ◆ Installation DSX-80/160 Hardware Manual
Making a T1/E1/PRI Crossover Cable
If you don’t have a T1 Tester, you can alternately test Tie Line operation between two T1/E1/PRI Cards in
the same cabinet or facility using the cable shown below. Using this same setup, you can loop a Tie Line to a
DID Line to test your DID routing before connecting to the CSU.
Figure 23: Making a T1/E1/PRI Crossover Cable
Pin
Latch
faces up
To T1 PCB To T1 PCB
80061 - 3
1
2
3
4
5
6
7
8
RX1T
RX1R
TX1T
TX1R
TX1R
TX1T
RX1R
RX1T
Pin
8
7
6
5
4
3
2
1
Connecting Two T1 PCBs Together without a Telco T1 Circuit
(For Tie Line Testing)