Components And Interfaces; Mechanical Components; Outer Enclosure; Outer Enclosure Security Locking Feature - ADTRAN Total Access 374 Installation And Maintenance Manual

Total Access 374 4-POTS, 4-GigE MDU ONT Installation and Maintenance Guide

Components and Interfaces

The ONT consists of the following components and interfaces:

■ Mechanical Components

■ Electronics Module
■ Circuit Board
Mechanical Components
The ONT is designed for outdoor or indoor applications. The ADTRAN Model 374 Network
Interface Device (NID) housing is intended as a demarcation point between the Telco and a
subscriber premises for outdoor application. For indoor application, the NID housing is not
used. The demarcation point is the Electronics Module itself.

Outer Enclosure

The Outer Enclosure provides both environmental control (weatherproofing) and access
control.

Outer Enclosure Security Locking Feature

The enclosure is intended for use on the outside of a building and is designed to meet US
environmental requirements. The unit is weather hardened and is able to withstand 70 m.p.h.
wind driven rain, high temperature, cold temperature, drop tests and all other GR-49, 
GR-950, and GR-487 requirements. The dimensions are approximately 15" high x 9" wide x 4"
deep (38.1 cm x 24.8cm x 10.1 mm). The external door provides access to the RJ-11 test
connectors, and Ethernet RJ-45 connectors. The enclosure door is held in the closed position
by two "snap" door retainers. To open the door these two snaps must be disengaged at the
same time.
The Outer Enclosure Door has a double security locking feature provided by the third molded
part. This provides the following capabilities:
■ Subscriber access door is closed using a Phillips head screw
■ Telco personnel can control access via the Telcom Can Wrench
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