Lucent Technologies DDM-2000 OC-3, Руководство по установке

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2-24 Issue 9 October 1998
363-206-204
Equipment and Rear Access Cable Installation
Miscellaneous (Environmental) Discrete
Telemetry Cable
Installation - Rear Access
Description
The miscellaneous (environmental) discrete telemetry access allows the
maintenance center to control and monitor equipment collocated with the
DDM-2000 OC-3.
The environmental control feature enables the maintenance center to remotely
initiate up to four contact closures at the remote terminal (RT) for equipment
operation such as pumps, generators, etc.
The environmental alarm status indications allow up to 14 (Releases 6 and 7) or
20 (Releases 8, 9, 11 and 13) miscellaneous user-settable alarm status
indications (SI) at the remote terminal for transmission toward the central office.
An additional external discrete (#15), dedicated for external power minor alarm
monitoring, is available (optional).
For external interconnection requirements using the miscellaneous discrete
telemetry feature (Releases 6 and 7) at a remote terminal, refer to Figure 2-15 or
Figure 2-16 for a central office. For Releases 8, 9, 11 and 13, refer to Figure 2-17.
Remote applications not using environmental telemetry or fan alarm connections
require terminations.
NOTE
:
This procedure should be performed for each shelf requiring environmental
telemetry.
NOTE
:
Miscellaneous (environmental) discrete telemetry cable options are listed
in Table 2-4.
NOTE
:
Miscellaneous (environmental) discrete telemetry connections are listed in
Table 2-12 for remote terminal applications and Table 2-13 for central office
applications.
Procedure
1. Obtain a miscellaneous (environmental) discrete telemetry cable Group
369 or 370 (Table 2-4). The cable is connected to the shelf requiring mis-
cellaneous (environmental) discrete telemetry.