Nortel Networks 1750 Manual Do Utilizador
Appendix A Technical specifications 89
Nortel VPN Router Installation — VPN Router 1750
The following table provides the T1/E1 CSU/DSU cable pinouts for a
straight-through connection.
straight-through connection.
Quad T1/E1 CSU/DSU WAN interface card
The quad T1/E1 CSU/DSU WAN interface card has four connectors that provide
the signals to interface to T1 or E1 equipment. The following figure shows the
quad T1/E1 CSU/DSU WAN interface card.
the signals to interface to T1 or E1 equipment. The following figure shows the
quad T1/E1 CSU/DSU WAN interface card.
Figure 31 Quad T1/E1 CSU/DSU WAN interface card
Each connector on the quad T1/E1 CSU/DSU WAN interface card accommodates
an 8-pin RJ-48 modular patch cord. These cables are commonly sold as category
5, or Ethernet, cables.
an 8-pin RJ-48 modular patch cord. These cables are commonly sold as category
5, or Ethernet, cables.
Table 30 T1/E1 CSU/DSU cable pinouts for straight-through connection
Nortel termination
Remote termination
Signal
Pin # to Pin #
Signal
Receive A (RXDA)
1
1
Receive A (RXDA)
Receive B (RXDB)
2
2
Receive B (RXDB)
Not used
3
3
Not used
Transmit B (TXDB)
4
4
Transmit B (TXDB)
Transmit A (TXDA)
5
5
Transmit A (TXDA)
Not used
6
6
Not used
Not used
7
7
Not used
Not used
8
8
Not used
Note: Nortel does not supply cables with the quad T1/E1 CSU/DSU
interface card.
interface card.
CS160012A