Nortel Networks 2700 사용자 설명서
Appendix A Technical specifications 95
Nortel VPN Router Installation — VPN Router 2700
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.
the signals needed to interface to T1 or E1 equipment.
shows the quad
T1/E1 CSU/DSU WAN interface card.
Figure 41
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 sold as Category 5, or
Ethernet, cables.
an 8-pin RJ-48 modular patch cord. These cables are sold as Category 5, or
Ethernet, cables.
Use cables that are 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 factory-made patch cords.
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 factory-made 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.
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.
(Ethernet) straight-through cable.
•
For a crossover connection, you cannot use a standard Category 5 crossover
cable. Do not interchange the T1/E1 CSU/DSU crossover cable and the
Ethernet crossover cable.
cable. Do not interchange the T1/E1 CSU/DSU crossover cable and the
Ethernet crossover cable.
. For information about the cable pinouts for a straight-through
.
Note: Nortel does not supply cables with the quad T1/E1 CSU/DSU
interface card.
interface card.
CS160012A