Table 22 T1/E1 Csu/Dsu Cable Pinouts For Crossover Connection; Table 23 T1/E1 Csu/Dsu Cable Pinouts For Straight-Through Connection - Nortel Contivity 1700 Installing Manual

78 Appendix A Technical specifications
Table 22

Table 22 T1/E1 CSU/DSU cable pinouts for crossover connection

Standard-wired
end 8-pin male
1
2
3
4
5
6
7
8
The cable will operate properly if pins 3, 6, 7, and 8 are not connected.
Table 23
connection.

Table 23 T1/E1 CSU/DSU cable pinouts for straight-through connection

Nortel Networks termination
Signal
Receive A (RXDA)
Receive B (RXDB)
not used
Transmit B (TXDB)
Transmit A (TXDA)
not used
not used
not used
314711-D Rev 00
provides the T1/E1 CSU/DSU cable pinouts for a crossover connection.
Signal name
RXDA<-TXDA
RXDB<-TXDB
not used
TXDB->RXDB
TXDA->RXDA
not used
not used
not used
Caution: For crossover connections, do not use Ethernet cable. The
T1/E1 CSU/DSU will not work to specifications. Data may be corrupted.
provides the T1/E1 CSU/DSU cable pinouts for a straight-through
Pair number
and conductor
wht/org pair 2A
orange pair 2B
wht/grn pair 3A
blue pair 1B
wht/blu pair 1A
green pair 3B
wht/brn pair 4A
brown pair 4B
Remote termination
Pin # to Pin # Signal
1 1 Receive A (RXDA)
2 2 Receive B (RXDB)
3 3 not used
4 4 Transmit B (TXDB)
5 5 Transmit A (TXDA)
6 6 not used
7 7 not used
8 8 not used
Special-wired
end 8-pin male
5
4
3
2
1
6
7
8