Nortel Networks 1750 User Manual

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82 Appendix A Technical specifications
NN46110-316 03.01
56/64K CSU/DSU WAN interface card
The 56/64K CSU/DSU WAN interface card has a single RJ-48 connector that 
provides the signals needed to interface to network equipment.
The following figure shows the 56/64K CSU/DSU WAN interface card.
Figure 26   56/64K CSU/DSU WAN interface card
The connector on the 56/64K CSU/DSU WAN interface card accommodates an 
8-pin RJ-48 modular patch cord.
Use cable that is wired in accordance with ANSI T1.410 wiring style. This wiring 
style ensures that a twisted pair inside the patch cord carries the transmit signal 
(pins 1 and 2) and the receive signal (pins 7 and 8). Nortel strongly recommends 
that you use professionally manufactured patch cords.
Connect the 56/64K CSU/DSU WAN interface card to the service provider 
network by using a straight-through cable or a crossover cable, depending on how 
the service provider wired the jack.
Note: Nortel does not supply an interface cable with the 
56/64K CSU/DSU WAN interface card.
56/64K
DDS