DSL digital connection line monitoring unit has packetisation modem with interface converter to ATM measurement unit

摘要

A DSL (Digital Subscriber Line) digital connection line (30) with filter coupling units (40, 50) to allow operation with narrow band signals adjacent to broad band signals monitoring unit (1) has a broadband signal duplication unit (20) with packetisation modem (21-3) controlled by a programmable controller (100) feeding an ATM (Asynchronous Transfer Mode) measurement unit through an interface converter (24).