Nortel Networks 2750 manual Quad T1/E1 CSU/DSU WAN interface card

96Appendix A Technical specifications

Table 31 provides the T1/E1 CSU/DSU cable pinouts for a straight-through connection.

Table 31 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

Quad T1/E1 CSU/DSU WAN interface card

The quad T1/E1 CSU/DSU WAN interface card has four connectors that provide the signals needed to interface to T1 or E1 equipment. Figure 41 shows the quad T1/E1 CSU/DSU WAN interface card.

Figure 41 Quad T1/E1 CSU/DSU WAN interface card

CS160012A

Each connector on the quad T1/E1 CSU/DSU WAN interface card accommodates an 8-pin RJ-48 modular patch cord. These cables are sold as Category 5, or Ethernet, cables.

Note: Nortel does not supply cables with the quad T1/E1 CSU/DSU interface card.

NN46110-318 02.01