GL Announces T1 Facility Datalink Analysis

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GL Communications Inc. announced today its enhanced T1 Facility Datalink Analysis software.

T1 Facility Data Link Analysis

GL's Facility Data Link protocol analyzer performs FDL decode and analysis on T1 channels in both real time and off-line using saved files with high level data link (HDLC) frames and bit-patterned extended super frame (ESF) data link messages.

GL Communications Inc. a leader in providing PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry, announced today its enhanced T1 Facility Datalink Analysis software.

Speaking to media persons, Mr. Vijay Kulkarni CEO the company said, “GL's Facility Data Link protocol analyzer performs FDL decode and analysis on T1 channels in both real time and off-line using saved files with high level data link (HDLC) frames and bit-patterned extended super frame (ESF) data link messages.

The real-time mode of operation is used to capture streams of HDLC frames on the selected cards and also embedded bit-patterned ESF data link messages. Captured information can be saved to disk for later off-line analysis. HDLC frames are parsed according to Q.921, FDL messages are decoded based on the AT&T TR54016, ANSI T1.403, T1.408, I.431, G.963 and G.704.”

He explained, “GL's Facility Data Link (FDL) software consisting of several powerful modules that have the capability to transmit, receive, and decode FDL data in many ways as described:

FDL Playback GUI application can playback raw data from files as well as files containing HDLC frames into the T1 FDL. The user may transmit valid HDLC frames (properly formed HDLC frame file required), or the user may transmit raw data from a file of raw (hex) bytes (codeword strings, etc.). When transmitting HDLC frames, the number of flags between frames may be selected. File playback for HDLC or raw bytes may be set to continuous, to end-of-file, or for a specified number of bytes.

FDL View & Save GUI application displays captured FDL bits, CRC bits, and framing bits as well as logging for future analysis. The view window refreshes automatically, and the user has the option of saving to a file the complete capture of all bytes received since the capture was started.

FDL VB Client for Windows Client Server has commands to record FDL data, playback FDL files, and playback user specified FDL data. A user friendly VB Client has been written to interface with the Server to emulate various FDL functions. Options for Tx and Rx different Performance Report Messages (PRM/SPRM/NPRM) are provided. The VB client also can playback/receive a list of code words and it also can transmit/receive user defined Rawdata /ASCII words.”

About GL Communications Inc.,

Founded in 1986, GL Communications Inc. is a leading supplier of test, monitoring, and analysis equipment for TDM, Wireless, IP and VoIP networks. Unlike conventional test equipment, GL's test platforms provide visualization, capture, storage, and convenient features like portability, remotability, and scripting

GL Communications has over the years worked with major telecom equipment vendors (EVs) and system integrators to meet the testing requirements arising at various stages of telecommunications product development life cycle.

With its proven expertise of over 25 years, GL has a comprehensive suite of telecom testing solutions to verify and ensure 'quality and reliability' of variety of telecom networks including Wireless, and high-speed fiber optic lines.

GL's test tools range from simple PC-based software test tool to all-encompassing hardware units with futuristic expansion capabilities. GL's test solutions cover wide array of networks – 4G (LTE), 3G, IP, Ethernet, T1, T3, E1, E3, OC-3/STM-1, OC-12/STM-4, and traditional PSTN networks.

GL's tools are widely used by the telecommunication industry for conformance testing, automated stress/load testing, performance testing, remote accessibility, centralized web-based control and analysis, fault testing and analysis, and customized testing.

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