Paradyne COMSPHERE 3821Plus User Manual page 18

COMSPHERE 3821Plus Modem
P26
J2 P22
Install the NIM
A NIM can be installed on the left or right side of the
back of the 3000 Series Carrier.
Procedure
1. If you are installing a NIM on the right side of the
carrier, press it onto the connectors P24 and P23. If
you are installing a NIM on the left side of the
carrier, press it onto the connectors P26 and P25.
2. Fasten the NIM to the carrier with the four
standoffs provided. See
3. Position the NIM cover over the NIM.
4. Fasten the NIM cover in place with the four screws
provided. See Figure
Cable the NIM
Connect one end of the short ribbon cable to the 50-pin
connector at the bottom of the NIM. Connect the other
end to P21 (on the right side of the carrier) or P22 (on the
left side of the carrier). See
Connect a network interface cable to the 50-pin
connector in the middle of the NIM. Connect the other
end to the dial or leased-line interface. This may be an
RJ11 gang box or a 66A-punchdown block. Wiring for the
50-pin NIM cable is shown in
2-2
P24
P20 P19
P25
J1 P21
Figure 2-1. Installing the NIM
Figure 2-1.
2-1.
Figure 2-2.
Appendix E.
STANDOFF
P23
TO P23
OR P25
TO P24
OR P26
A 2-wire leased line connection to a JM8 interface
requires a 6-position to 8-position crossover cable. See
Appendix E.
NETWORK INTERFACE
P21 or P22
Figure 2-2. Cabling the NIM
February 1998
NIM COVER
NETWORK
INTERFACE
MODULE
(NIM)
495-14854
CABLE
SHORT
RIBBON
CABLE
495-14798
3821-A2-GB20-30