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COMSPHERE –48 Vdc Central Office Power Unit
2-18 May 1998 3000-A2-GB41-40
To connect the alarm contacts to the external leads of a
Modular 3611 DSU (configured for alarm forwarding):
" Procedure
1. At the rear of the carrier, plug the 6-wire modular
plug end of the NMS adapter cable into the J1
connector (a 6-position modular jack) on the CO
Power Unit’s backplane (see Figure 2-9).
2. If there is an EIA-232 cable on the top connector
(labeled EIA232/V.24) of a Modular 3611 DSU’s
rear connector plate, remove the ferrite choke and
the EIA-232 cable. Plug the DB25 male end of the
NMS adapter cable into the top connector of the
rear connector plate. Tighten the screws to hold
the cable in place. Then, attach the ferrite choke to
the NMS adapter cable. Plug the EIA-232 cable
into the DB25 female end of the NMS adapter
cable. Tighten the screws to hold the cable in
place. See Figure 2-9.
Figure 2-9. Connecting an NMS Adapter Cable to a Modular 3611 DSU
When the DTE Interface is EIA-232