Overview

High quality delivery of voice, data and video over xDSL lines requires optimum interoperability of splitters and in-line filters with xDSL transceivers. Video signal interruption is a common problem, often caused by the interference of voltage transients that arise during on-hook, off-hook, ringing and Ring-Trip voice-related events. The TR-127 Splitter Testing Technical Report (as published by the Broadband Forum) defines splitter test procedures to maximize interoperability and thereby improve customer satisfaction.
 

Telebyte’s TR-127 Integrated Test Solution is the first real-world, end-to-end xDSL test system for simulation of the interference caused by voltage transients and their affects on the local loop in the dynamic telephony environment. The system provides accurate, repeatable testing at ADSL2, ADSL2plus and VDSL2 bandwidths, using a combination of three key elements: Ring-Trip interference generation, AWGN (white noise) generation and local loop simulation designed to handle the high voltages and currents that may occur during Ring Trip. While control via remote commands or a user-friendly GUI is included, optional software may be purchased to control and automate the entire test setup (including DSLAM), analyze data and generate comprehensive formatted reports.

Example

The example set up shown above depicts the Model 458-RT and 458-LM-A1-30-DC as part of a TR-127 test set up for North America. Both modules must be installed in Telebyte’s 458-3SLB or 458-CC-16 chassis (not shown). Control via remote commands or a user-friendly GUI are included with the chassis purchase. Optional software is available to automate this test and control the DSLAMs.

Solution Components: