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DS1 I/O Front Module
Plexus 9000 Planning and Engineering Guide
Issue 4, April 23, 2004
Section 130-120-400
5-112
Telica,
Inc.
The system features 1:N protection of the DS-1 line interface modules.
The same front module type is used for both working and protection
applications, thus simplifying sparing, maintenance and inventory. The
DS-1 IOM can be used in the original 85-3000 chassis, the 85-3004
chassis and the 85-3007chassis. The DS-1 protection slot in all chassis is
I/O-7. If the user does not desire to protect line- and trunk-side interfaces,
the system can be equipped with 17 interface modules.
The front DS-1 IOMs require rear modules for physical interface
terminations. The 28 DS-1 rear modules feature two 64-pin Amp-style
connectors, with transmit pairs on one connector and receive pairs on the
other. The rear protection DS-1 does not have any connectors.
5.9.2.1
General Mechanical Representation
The DS-1 IOM is approximately 14 inches high and plugs into the
midplane for connections to the rear IOM and to the SF and SP modules.
Refer to
for an illustration of the mid-plane connector, the
DS-1 IOM and the front of the module. Refer to
for a
description of the LEDS.