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Press Release: GL Releases Ultimate Diagnostic Tool for Telecom Networks

Gaithersburg, Maryland, USA - November 30, 2009 - GL Communications Inc. announced today the release of a new application Call Data Record – an ultimate diagnostic tool for telecom networks. Addressing a press conference Mr. Vijay Kulkarni, CEO of the company said, “CDR provides comprehensive information on each and every call occurring on T1 E1 lines, including: voice capture for both directions, complete signaling information for each direction for CAS, ISDN, MFC-R2, SS7, all alarms and errors occurring during the call including BPV, Frame Errors, CRC errors, Loss Of Sync, and more”.

He added, “The application works with CCA (Call Capture and Analysis) and VBA (Voice Band Analyzer) applications and generates the two types of reports: Call Summary Report, Call Detail Report”.

Mr. Kulkarni further added, “The Call Capture & Analysis (CC&A) application captures bidirectional voice traffic to files. Captures may be triggered by protocols such as signaling bits, ISDN or SS7 signaling. CCA also records signaling and alarm events, as well as producing a summary record for each call. Each CCA instance can monitor a single T1 or E1 trunk. Multiple CCA instances may be run concurrently to monitor multiple trunks.

The Voiceband Analyzer (VBA) application operates in near-real-time, processing the signal files recorded by CCA. VBA may be configured to detect in-band events such as sporadic acoustic echo, line echo, digit tones, in-band impairments, and the like. It also produces summary measurements of the captured signals, including active speech levels, noise level, percent time active, and DC offset. VBA records its output into two files, the first containing overall channel measurements, and the second containing event records”.

Important features:

  • Classifies the captured events from CCA into Call summary information (CSR), Channel supervision (CAS, ISDN, etc.), and Facility alarms results
  • Classifies the captured events from VBA into In-band events (digits, echo, etc.) results and overall traffic signal measurements
  • CDR can be configured to output its results to "comma-separated values" ("CSV") files or direct CSV file for loading into a database or spreadsheet

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, STM-1, 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, etc.), and with capacities up to thousands of channels.

GL's VoIP and IP products generate / analyze thousands of calls / traffic simultaneously with traffic types such as frames, packets, voice files, digits, video, tones, noise, and fax using G.711, G.729, AMR, EVRC, GSM and a range of other codecs. 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 excepted solution across the telecom industry. Voice Quality Testing across multiple networks (T1, E1, T3, E3, OC-3, VoIP, Wireless, and Landline) are all available.

GL's Wireless Products perform protocol analysis and voice quality assessment on GSM, CDMA and UMTS 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 compliance testing per G.168 and G.160 across TDM, IP, VoIP and Wireless networks. GL's wirelss 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 intelligence. Centralized or distributed access, efficient transport and database loading allow compatibility with 3rd party and standards based monitoring systems.

For more information about GL's complete line of products,


Shelley Sharma
Phone: 301-670-4784 ext. 114

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