Zhone 3821Plus User's Guide download pdf (Page 20)

COMSPHERE 3821Plus Modem

2-2 January 1999 3821-A2-GB20-40

P26 P25

P24

P23

P20 P19

J2 P22

P21

495-14854

TO P23

OR P25

TO P24

OR P26

NETWORK

INTERFACE

MODULE

(NIM)

NIM COVER

STANDOFF

Figure 2-1. Installing the NIM

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 Figure 2-1.

3. Position the NIM cover over the NIM.

4. Fasten the NIM cover in place with the four screws

provided. See Figure 2-1.

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 Figure 2-2.

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 Appendix E.

A 2-wire leased line connection to a JM8 interface

requires a 6-position to 8-position crossover cable. See

Appendix E.

495-14798

NETWORK INTERFACE

CABLE

P21 or P22

SHORT

RIBBON

CABLE

Figure 2-2. Cabling the NIM

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