GL Communications Inc.
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Company Overview


With its proven expertise of over 30 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. A privately held company, founded in 1986, GL offers customers a team of seasoned experts with a broad understanding of the specific challenges they face and the technical creativity to meet complex requirements.

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

Unlike conventional test equipment, our test platforms provide unprecedented visualization, capture, storage, & features without sacrificing portability, convenience, or cost-effectiveness. GL provides customers with a wide range of easily-adaptable, cost-effective, and highly-reliable products and services designed to aid the telecommunications engineer.

Founded 1986
Brief History GL Communications was formed by Vijay Kulkarni and T. Bruce Yost on October 22, 1986. Vijay and Bruce met in 1985 while working as Engineers at FiberTrak in Reston, VA. FiberTrak was a company formed by two railroads ( Norfolk Southern & Southern Pacific) to design and build a communications network along their railroad right-of-ways across the United States. The project was "dropped", but a friendship and long-term partnership that has lasted twenty years was formed. Out of this friendship, GL Communications Inc. was born.

Major Landmarks
  • June 1989 - GL Communications moved into its first office at 963A Russell Avenue in Gaithersburg, Maryland, and hired one full time employee.
  • 1990 through 1995 - GL Communications hires an additional seven full time employees
  • 1991 - GL Communications moves into expanded offices at 841 F&G Quince Orchard Boulevard in Gaithersburg, Maryland.
  • 1991 GL Communications completes the sale of its first T1 card
  • 1992 GL Communications attends their first trade show
  • October, 1993 GL Communications sends out its first international shipment
  • 1996 through 2001 - GL Communications hires an additional sixteen full time employees
  • 1998 - GL Communications website goes online
  • August 2000 - GL Communications moves its headquarters to 207A Perry Parkway in Gaithersburg, Maryland
  • December 2000 - GL Communications closes out its first year of $10M in sales
  • February 2001 - GL Communications opens an office in Bangalore, India
  • June 2001 - GL Communications opens a representative office in Los Gatos, California
  • February 2003 - GL Communications opens a representative office in Shanghai, China
  • July 29, 2005 - GL loses one of their beloved Co-founders, Thomas "Bruce" Yost
  • September, 2007 – GL Communications moves its headquarters into an expanded and newly renovated office space at 818 West Diamond Ave., Third Floor, Gaithersburg, MD.
Headquarters 818 West Diamond Avenue - Third Floor
Gaithersburg, MD 20878
Phone: +1 (301) 670-4784
Fax: +1 (301) 670-9187
Branch Locations
Web Site
Key Executives Vijay Kulkarni, President & Chief Technology Officer

T. Bruce Yost, Vice President & Operations Director
Products & Consulting Services

GL's test tools range from simple PC-based software test tool to all-encompassing hardware-based test tools with futuristic expansion capacities. GL's test solutions cover wide array of networks -

  • WIRELESS (4G (LTE), 3G, 2G)
  • IP, Ethernet
  • T1, E1, T3, E3, PSTN
  • OC-3/STM-1, OC-12/STM-4

The 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.

GL also offers a versatile line of products such as MAPS™, PacketExpert™, IPNetSim™ and Voice-Video-Data QoS test suite that are ideal for simulating and testing advanced telecommunications networks and network elements such as switches, gateways and transmission systems. In addition to supporting wide variety of protocols, they provide the ability to simulate traffic (Voice, Digits, Tones, Talk, etc.) on the established calls to perform load/stress testing. A comprehensive suite of protocol analysis applications provides a detail packet-to-packet investigation, thus allowing packet loss, delay, jitter, and so on to be calculated automatically. Real-time RTP (voice) monitoring and capturing completes a powerful VoIP solution. 

GL's Voice-Video-Data QoS Test Suite complements all of GL's products. Using ITU-standard algorithms (PESQ and POLQA), GL's Voice Quality Testing provides a widely accepted voice quality measurements across multiple networks (Wireless, VoIP, T1/E1/T3/PSTN, etc.).

A broad classification of the test and measurement solutions based on different networks is detailed in Company Overview brochure.
Consulting Services

GL Communications Inc. provides consulting services for telecommunication companies all around the world. We offer consulting services for WIRELESS, SONET/SDH, T1/E1, and T3/E3 testing and analysis, and system design of wireless, satellite, fiber optic, and microwave networks.

Please visit Consulting Services webpage for any additional information regarding GL's consulting services.

Markets Served Telecommunications industry all over the world.
Customers Click here to see a list of a few of our current customers.
Media Contacts GL Communications Inc.
818 West Diamond Avenue - Third Floor
Gaithersburg, MD 20878
Phone: +1 (301) 670-4784
Fax: +1 (301) 670-9187

Product Contact
Shelley Sharma at Ext. 114

Consulting Contacts
Vijay Kulkarni at Ext. 115
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