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Press Release: GL Releases DCOSS Media Gateway

Gaithersburg, Maryland, USA - February 24, 2009 - GL Communications Inc., announced today the release of DCOSS Media Gateway. Briefing the news to the press, Mr. Rob Bichefsky, Senior Manager at GL said, "Our latest product DCOSS Media Gateway provides a single point solution that supports traffic and signaling testing of VoIP and TDM networks in one platform”. He added, "The DCOSS / Media Gateway combination provides user friendly bulk call generation, scripting, and other automated call generation and reception for various voiceband traffic types including voice, fax, and modem traffic. It can be connected to any TDM or IP Phone, softphone, VoIP or TDM PBX, or TDM or VoIP Network / Cloud”.

Mr. Bichefsky further added, “The DCOSS / Media Gateway supports internal traffic generation/ reception (Fax, Modem, Voice Files, Digits and Tones) as well as external traffic from optional analog 2-wire and BRI 4-wire interfaces. It also supports a variety of different TDM and VoIP protocols, and support for VoIP includes: SIP, H.323, Megaco, MGCP, T.38 fax. Support for TDM includes: ISDN, SS7, and CAS. The DCOSS Media Gateway also supports: bulk calling, scripting, and remote client/server access”.

Some of the Important Features:

  • Dual redundant Ethernet trunks
  • Call capacity up to 96 or 120 calls simultaneously (scalable depending on the GL Media Gateway selected)
  • Voice, Fax and Modem Call Generation and Reception
  • DTMF/MF Generation and Detection
  • Single/Dual Frequency Tone Generation and Detection
  • Call Monitoring and Recording
  • Automatic Bulk Call Generation/Reception for Load Testing
  • Bulk Call Scripting
  • Call Statistics and Call Detail Records
  • Save/Load all parameters as user-defined configurations

Media Gateway (Basic and other configuration)

GL's Media Gateway (MG) in combination with GL's DCOSS is used to provide bulk call traffic generation for VoIP and TDM interfaces. The Media Gateway can also be used with GL's T1E1 Analyzer for various call capture and analysis functions.

For comprehensive information on the product, please refer to DCOSS Media Gateway web page.

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 products generate / analyze thousands of calls simultaneously with traffic types such as 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 a Software Ethernet Testing capability that checks frame transport and throughput parameters of Ethernet and IP networks.

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, Landline, etc.) 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, RS422 / RS530, 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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