V.90 Modem Interface Card; Figure 42 V.90 Modem Interface Card; Table 31 Mv.90 Modem Cable Pinouts - Nortel 1750 Install Manual

96 Appendix A Technical specifications
Use cable that is 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 information about the cable pinouts for a crossover connection, see
on page
connection, see

V.90 modem interface card

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.
Figure 42

Figure 42 V.90 modem interface card

Included in the accessory box is a 7-foot RJ-11 cable to attach to a telephone jack.
Table 31

Table 31 MV.90 modem cable pinouts

Pin
1
2
NN46110-316 02.01
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. Do not interchange the T1/E1 CSU/DSU crossover cable and the
Ethernet crossover cable.
94. For information about the cable pinouts for a straight-through
Table 30 on page
shows the V.90 modem interface card.
provides the V.90 modem port cable pinouts.
Function
N/C
Tip
95.
Table 29