GL Announces its Facility Data Link (FDL) Protocol Analysis and Emulation Software

GL Communications Inc announced today the availability of its FDL Protocol Analysis and Emulation software. .

  • Share on TwitterShare on FacebookShare on Google+Share on LinkedInEmail a friend

FDL Protocol Analyzer

The Facility Data Link (FDL) Analyzer module 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.

Gaithersburg, Maryland, USA (PRWEB) January 10, 2013

GL Communications Inc. a leader in providing PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry, announced today the availability of its FDL Protocol Analysis and Emulation software.

Speaking to media persons, Mr. Vijay Kulkarni CEO of the company said, ”The Facility Data Link (FDL) Analyzer module 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 FDL requires ESF mode. The real-time mode of operation is used to capture stream 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. Both real-time and off-line analysis present information in two layers: Raw HDLC Frame data as a hexadecimal and ASCII octet dump, FDL message information.”

He added, “HDLC frames are parsed according to Q.921, and FDL messages are decoded based on the AT&T TR54016, ANSI T1.403, T1.408, I.431, G.963 and G.704.Multiple instances of FDLA can run simultaneously capturing data from several T1 lines. Each instance can capture data from up to four T1 lines.

The frame information is displayed in two panes: summary view and detailed view. The detailed view pane displays the detailed information that includes all layers and can be exported to an ASCII file for the further off-line analysis. Captured Frames can later be used for traffic simulation using the FDL transmit application.”

Mr. Kulkarni further added, “The Client Server Scripted Control Software 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’s TDM Analysis & Emulation line of products includes T1, E1, T3, E3, OC-3, OC-12, STM-1, STM-4, analog four-wire, and analog two-wire interface cards, external portable pods, and complete system solutions. Capabilities include voiceband traffic analysis and emulation across all traffic types (voice, digits, tones, fax, modem), all protocols (ISDN, SS7, GR-303, Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, LTE, etc.), and with capacities up to thousands of channels. Our newest products provide astonishing capacity and capture capability up to and including gigabit speeds.

GL’s VoIP and IP products generate / analyze thousands of calls and traffic simultaneously with traffic types such as frames, packets, voice files, digits, video, tones, noise, and fax. Almost all codecs are supported including G.711, G.729, AMR, EVRC-A,B,C, GSM, iSAC, and many more. Additional features include visual analysis, real-time listening, and recording. The product line also includes Ethernet / IP Testing capability that simulates and checks frame transport and throughput parameters of Ethernet and IP networks, including delay, errors and other impairments.

GL's Voice Quality Testing (VQT) product line complements all of GL's products. Using ITU-standard algorithms (PAMS, PSQM, and PESQ), GL's VQT provides a widely accepted solution for assessing voice quality in the telecom industry. Voice Quality Testing across multiple networks (T1, E1, T3, E3, OC-3, OC-12, VoIP, Wireless, and Landline) is available.

GL’s Wireless Products perform protocol analysis and voice quality assessment on GSM, CDMA, UMTS, and LTE networks. Connections can be made to any wireless phone with automated call control, GPS mapping and real-time signal measurements.

GL’s Echo Canceller testing solutions provide the broadest range of simulation and analysis, including line and acoustic echo. GL’s compliance testing per G.168. G.167 and P.340 across TDM, IP, VoIP and Wireless networks is widely accepted in the industry.

GL’s wireless VQT solutions help assessing impairments to voice quality such as poor mobile phone quality, voice compression and decompression algorithms, delay, loss and gain in speech levels, noise, acoustic and landline echo, and other distortions are easily assessed and accurately measured.

GL’s Handheld data testers can test a wide variety of communications facilities and equipment including T1, fractional T1, E1, fractional E1, T3 and E3 modems, multiplexers, CSU, DSUs, T1 CSUs, DTUs, NTUs and TIUs and more. The testers provide convenience, economy, and portability for almost any interface, including RS232, RS-422, RS-530, X.21, T1, E1, T3, E3, and many others.

GL’s Network Surveillance and Monitoring products include Probes for TDM, IP, VoIP, ATM, and Wireless networks. An open standards based approach provides a scalable, feature rich, real-time access to network characteristics. Centralized or distributed access, efficient transport and database loading allow compatibility with 3rd party and standards based monitoring systems.