Nortel 1100 安装指导
Appendix A Technical specifications 191
Nortel VPN Router Installation — Hardware Options
The connector on the 56/64K CSU/DSU WAN interface card accommodates an
8-pin RJ-48 modular patch cord.
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.
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.
You connect the 56/64K 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.
network using a straight-through cable or a crossover cable, depending on how the
service provider wired its jack.
provides the 56/64K CSU/DSU cable
pinouts for a crossover connection.
The cable operates properly if you do not connect pins 3, 4, 5, and 6.
Note: Nortel does not supply an interface cable with the
56/64K CSU/DSU WAN interface card.
Table 21
56/64K CSU/DSU cable pinouts for crossover connection
Nortel termination
Remote termination
Signal
Pin # to Pin #
Signal
Transmit tip
1
7
Receive tip
Transmit ring
2
8
Receive ring
not used
3
3
not used
not used
4
4
not used
not used
5
5
not used
not used
6
6
not used
Receive tip
7
1
Transmit tip
Receive ring
8
2
Transmit ring