Manualsbrain.com
  1. Manuals
  2. Brands
  3. Nortel Networks
  4. 2700
  5. User Manual

Nortel Networks 2700 User Manual

Download
Page of 108
Appendix A  Technical specifications  89
Nortel VPN Router Installation — VPN Router 2700 
The cable operates properly if you do not connect pins 3, 4, 5, and 6.
 provides the 56/64K CSU/DSU cable pinouts for a straight-through 
connection.
Table 24   
56/64K CSU/DSU cable pinouts for crossover connection
Nortel termination
Remote termination
Signal
Pin # to Pin #
Signal
Transmit tip
1
7
Receive tip
Transmit ring
2
8
Receive ring
not used
3
3
not used
not used
4
4
not used
not used
5
5
not used
not used
6
6
not used
Receive tip
7
1
Transmit tip
Receive ring
8
2
Transmit ring
Caution: For crossover connections, do not use Ethernet cable. If you 
use Ethernet cable, the link cannot be established.
Table 25   
56/64K CSU/DSU cable pinouts for straight-through connection
Nortel termination
Remote termination
Signal
Pin # to Pin #
Signal
Transmit tip
1
1
Transmit tip
Transmit ring
2
2
Transmit ring
not used
3
3
not used
not used
4
4
not used
not used
5
5
not used
not used
6
6
not used
Receive tip
7
7
Receive tip
Receive ring
8
8
Receive ring