Quad T1/E1 Csu/Dsu Wan Interface Card - Nortel VPN Router 1750 Installation Manual

The following table provides the T1/E1 CSU/DSU cable pinouts for a
straight-through connection.
Table 30 T1/E1 CSU/DSU cable pinouts for straight-through connection
Nortel termination
Signal
Receive A (RXDA)
Receive B (RXDB)
Not used
Transmit B (TXDB)
Transmit A (TXDA)
Not used
Not used
Not used

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.
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.
Note: Nortel does not supply cables with the quad T1/E1 CSU/DSU
interface card.
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Appendix A Technical specifications 89
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
Nortel VPN Router Installation — VPN Router 1750
CS160012A