Nortel 1100 Installation Instruction

Appendix A  Technical specifications  199

Nortel VPN Router Installation — Hardware Options 

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.

Use cables you wired in accordance with EIA-568-A wiring style. This wiring 
style ensures that a twisted pair inside the patch cord carries the transmit signal 
(pins 4 and 5) and the receive signal (pins 1 and 2). Nortel strongly recommends 
that you use professionally manufactured patch cords.

You connect the quad T1/E1 CSU/DSU WAN interface card to the service 
provider network using a straight-through cable or a crossover cable, depending 
on how the service provider wired its jack.

•

For a straight-through connection, you can use a standard Category 5 
(Ethernet) straight-through cable.

•

For a crossover connection, you cannot use a standard Category 5 crossover 
cable. You cannot interchange the T1/E1 CSU/DSU crossover cable and the 
Ethernet crossover cable.

For information about the cable pinouts for a crossover connection, see 

. For information about the cable pinouts for a straight-through 

connection, see 

.

The V.90 modem interface card has two RJ-11 connectors that provide the signals 
needed to interface to an incoming telephone line and to telephone equipment.

 shows the V.90 modem interface card for VPN Routers 

other than the VPN Router 1100.

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