Press Release: GL Communications Enhances Echo Canceller Testing Tools
New echo canceller testing tools support improved voice quality
Atlanta, Ga. - June 4, 2002 - Today at Supercomm, GL Communications introduced its new and enhanced echo canceller testing tools - enabling communications
carriers and equipment manufacturers to improve the voice quality of wireline and wireless networks. GL Communications is a leading provider of PC-based
telecommunications test, analysis and simulation products.
"Echo cancellers are critical to the provision of high-quality calls and good service, ingredients that have a major impact on customer retention and revenues for communications
carriers," said Vijay Kulkarni, president and CTO of GL Communications. "GL is now adding to and enhancing its comprehensive set of echo canceller testing tools to assist our
customers in improving the quality of calls they provide."
GL offers a wide range of G.168 echo canceller compliance testing and measurement software applications to handle everything from quick testing and verification to testing
of very complex scenarios involving large networks. These applications can be used to simulate speech, add background noise, and measure delays through a variety of network
configurations, including conventional telephone networks, networks with satellite connectivity, and wireless networks.
The new features and enhancements announced today include:
- Digital Signal Processing (DSP) within GL's Windows Client/Server
The Windows Client/Server software provides the user of T1/E1 analysis cards with the capability of remote operation, automation and multi-site connectivity, and now with a
wide array of DSP functions. Complex echo paths, as well as complex block diagram operations, can be easily simulated. Automating these functions offers the major advantage
of a more comprehensive, ongoing, accurate tracking system.
- 2/4 Wire Hybrid Characterization
Tailored specifically to echo cancellers, the 2/4 Wire Hybrid Characterization is an optional new measurement tool now available with GL's user-friendly graphical user interface (GUI).
The impulse response of any hybrid or filter is determined by using "input to" and "output from" PCM files. Either of two recommended methods in G.168 specifications - least-squares (LS)
algorithm or normalized least-mean square (NLMS) algorithm- can be used to compute the impulse response. A graphical, tabular, and spectral representation of the impulse response is
provided for comprehensive analysis.
The AutoECTest application allows the user to automatically test an echo canceller's performance per the ITU-T G.168 specification. GL has now upgraded this popular test tool to
include tests for tone disable, low speed modems, and fax - providing more comprehensive testing for a wide variety of network applications and services.
About GL Communications Inc.
Founded in 1986, GL Communications Inc. is a leading supplier of rigorous,
For general information on
PC-based test, analysis and simulation equipment to the telecommunications industry. The company offers
a wide range of products and services designed to aid the telecommunications engineer working in a research and development environment.
For more information on
- GL's PC-Based T1/E1/T3 test, analysis and simulation products
Phone: 301-670-4784 ext. 114
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