Comtest Networks MTAS-192 METALLIC TEST ACCESS SYSTEM - Manual (Page 7)

CT-IG-MTAS192-2008-v1_8.doc Comtest Networks
MTAS-192
June 2006 Installation Guide 1
Chapter 1
Introduction
1.1 Overview
This chapter provides an introduction to the 192-port Comtest Networks Metallic Test
Access System (MTAS-192).
1.2 The Metallic Test Access System
The MTAS-192 is a high density, modular metallic test access system (MTAS) for DSL
splitter and non-splitter applications. It combines xDSL Splitter, Metallic Test Access
Unit (MTAU), and Splitter/MTAU functionality into a single physical shelf/chassis, the
MTAS-192.
Figure 1: MTAS-192 (Front Panel)
The MTAS-192 sits between the subscriber lines and the DSLAM (Digital Subscriber
Loop Access Multiplexer), enabling simultaneous voice and data services over the
subscriber’s local loop, in conjunction with remote test access capability for customer
line monitoring and troubleshooting. The MTAS enables the user to non-intrusively
monitor the line or perform intrusive test access upstream and downstream. Test
access functionality can be controlled by any leading broadband test head or
Operational
Support System ( OSS) that is compliant with the GR-834 and GR-818 standards.
The MTAS offers up to 192 two-wire circuits per 3 rack units (RU) of test access and
can be daisy-chained to provide over 2,000 ports per configuration. The MTAS product
family consists of the test access shelf, control modules, and choice of cards for DSL
splitter and non-splitter test access applications. The backplane houses the POTS and
LINE interfaces using standard 50 pin (25 pair) female RJ-21 connectors. The DSL
interface is located on the front of each line card, also using a standard 50 pin (25 pair)
female RJ-21 connector.
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