GL Communications Inc

Gaithersburg, MD 20878


About GL Communications Inc



818 W Diamond Ave
3rd Fl
Gaithersburg, MD 20878
United States

More Info on GL Communications Inc

GL Communications Inc, is a global provider of test and measurement solutions and over the last 30 years, GL Communications has worked with major telecom equipment vendors and system integrators to meet the testing requirements arising at various stages of product development and network deployment.

GL has a comprehensive suite of telecom testing solutions to verify and ensure quality and reliability of a variety of telecom networks, including wireless Wireless (4G LTE, 3G, 2G), SONET/SDH, IP, TDM, and PSTN networks.

Particularly in SONET/SDH communications, GL offers a broad set of network test solutions to perform multiple types of testing on networks, from initial system design to fine-tuning, troubleshooting, live deployment and live monitoring. The GL testing platform includes:

  • Automated test tools for live network monitoring and analysis
  • SDH and SONET protocol analyzers
  • SDH and SONET protocol emulators
  • Service verification of PoS, ATM and 3G/UMTS networks
  • Channelized access to hundreds of T1s or E1s over OC-12/STM-4 for analysis and simulation
  • Ethernet, SONET, and SDH Backhaul testing 

A list of GL’s product-line is here -

The test services and products offered by GL are widely used by the telecommunications industry for end-to-end testing, centralized remote web-based control and analysis, service assurance, network optimization, conformance testing, automated stress/load testing, fault testing and analysis, and customized test requirements.

GL also provides consulting services for system design, development, planning, testing, and analysis, along with ongoing support to clients worldwide.Please visit for any additional information regarding GL's consulting services. 


Buyer's Guide

Packet Traffic Generator & Analyzer (10 GigE)

GL’s Traffic Generator and Analyzer is capable of generating multi-stream (16 streams) Ethernet traffic with packet size distributions and analysing the loopback traffic. Provides...
Buyer's Guide

Critical Time Delay Measurement in VoIP ATM

GL has valuable tools to precisely recognize, capture, timestamp, and correlate events at both TDM and IP interfaces.
Buyer's Guide

Audio Analyzer for Voice, Video and Data Testing

It is a 4-wire audio device that can connect to a CWP and emulate a controller. It has the ability to generate TTL for different actions (PPT ON/OFF, Send/Detect Audio).
Buyer's Guide

VoIP ATM Network Monitoring Tool

Monitors voice quality and performance of Air-to-Ground, Ground-to-Ground calls between Controller Working Position (CWP) and Ground Radio Station (GRS) entities in the Air Traffic...
Buyer's Guide

ED137 Telephone and Radio Emulator

GL offers MAPS™ ED137 Radio to simulate the functions of Controller Working Position (CWP) and Ground Radio Station – GRS entities in Air-Ground radio calls.
Buyer's Guide

Testing Backhaul Networks

GL offers a complete line of SONET/SDH, Ethernet, TDM, T1/E1, T3/E3, Microwave, and Satellite Test Solutions, providing operators with versatile test solutions. GL’s Universal...
Buyer's Guide

IPNetSim™ - Multi Stream IP WAN Emulation for 1G and 10G

IPNetSim™ emulates a bidirectional WAN IP Link with a 10 Gbps or a 10/100/1000 Mbps full duplex link. For each direction, incoming traffic can be identified into separate user...
Buyer's Guide

PacketExpert 10G - Next-Generation 10G Ethernet/IP Tester

GL’s PacketExpert 10G provides comprehensive testing of 10 Gbps wirespeed Ethernet/IP networks. It has two 10Gbps Optical ports, and two 10/100/1000 Mbps Electrical/Optical ports...
Buyer's Guide

IPNetSim™ Handheld (Ethernet, IP, WAN Network Emulator)

GL's IPNetSim™ Handheld is a hand-held battery operated instrument that can simulate the real-time IP and Carrier Ethernet network dynamics by means of hardware controlled delay...
Buyer's Guide

Protocol Emulation & Analysis (ATM, PoS)

GL's MAPS™ application supports simulation of signalling and traffic behaviour over ATM and PoS networks on OC-12/STM-4 and OC-3/STM-1 using LightSpeed1000™ hardware platform....


Lw Gl Communications M Top Test System
Network Test

GL Communications' mTOP Probe portable test platform targets TDM, optical, and packet networks

The Multiple TDM Optical and Packet (mTOP) Probe hardware platform features remote access capabilities, making it suitable for field testing, monitoring, and troubleshooting network...

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Additional content from GL Communications Inc

Buyer's Guide

Packet Delay Emulation

The Network Delay Emulator application provides full duplex delay simulation for PoS and ATM based traffic from 1 ms to 500 ms, with incremental delays of 1 ms. The application...
Buyer's Guide

Testing Unchannelized SONET/SDH Links (OC-3/12 and STM-1/4)

GL's LightSpeed1000 hardware platform (PCIe Card and USB Pod) is capable of OC-3/12 and STM-1/4 wire-speed processing on quad optical ports for functions such as wire-speed recording...
Buyer's Guide

Testing Channelized OC-12/STM-4 and OC-3/STM-1 (SONET SDH MUX DEMUX)

GL’s LightSpeed1000 supports Channelized SONET and SDH mapping to T1/E1 framing modes. “Direct Access” to uo to 336 T1s on Multiplexed OC-12/STM-4, OC-3/STM-1, and T3/E3. A more...
Buyer's Guide

Wirespeed Packet Capture/Playback (Packet Capture, Filter, Drop & Storage)

Wirespeed Capture and Playback testing is an optional application within PacketExpert™ 10G platforms. Record Playback module is a Wirespeed Ethernet Tap, which works as a High...
Buyer's Guide

Ethernet BERT

GL's enhanced PacketCheck™ is a comprehensive PC based Ethernet / IP test tool with BERT and Throughput testing abilities. It is very easy to use as a general purpose network ...
Buyer's Guide

Portable Optical / Electrical Ethernet Tester

PacketExpert™ is a portable (USB based) Quad Port Ethernet / VLAN / MPLS / IP / UDP Tester with 4 Electrical Ethernet Ports (10/100/1000 Mbps) and 2 Optical Ports (1000 Mbps)....
Buyer's Guide

High Density 12/24 Port Ethernet Tester (HD PacketExpert)

HD-PacketExpert™ offers higher densities of 12/24 GigE ports form factor solution for testing GigE switches, routers and network conditions. This multi-device hardware unit incorporates...
Buyer's Guide

ITU-T Y.1564 Tester ExpertSAM

ExpertSAM™ is an optional application with GL’s PacketExpert™, a quad port Ethernet / IP Tester. PacketExpert™ is a portable (USB based) Quad Port Ethernet / VLAN / MPLS / IP ...
Buyer's Guide

RFC 2544 Tester

RFC 2544 allows the test frame to be configured with Stacked VLAN and Stacked MPLS. This way, end to end RFC 2544 test can be conducted across a Carrier Ethernet/MPLS network....
Buyer's Guide

STM-1 Multiplexer and Traffic Capture/Analysis

STM-1 Mux is a cost-effective, compact (only 1U high), SDH (Synchronous Digital Hierarchy) multiplexer that is designed for applications in metro and access networks for efficient...
Buyer's Guide

Ethernet Services Validation - BERT, Record/Playback, RFC 2544, Smart Loopback, Y.1564, and WAN Emulation.

PacketExpert is a portable unit that supports wire speed testing on both Electrical and Optical Links with applications such as BERT, Record/Playback, RFC 2544, Smart Loopback...
Buyer's Guide

Consulting and Design Services

GL has developed, in house, an extensive array of advanced tools to design and engineer wireless/cellular and digital microwave networks. Our customers in wireless and transit...
Buyer's Guide

ATM and Pos BER Tester

LightSpeed1000 supports Bit Error Rate Testing over ATM and PoS OC-3 / STM-1 and OC-12 / STM-4 interfaces. ATM Bit Error Rate Test (BERT) application permits BER testing over ...
Buyer's Guide

OC-3/STM-1 Analyzer for SONET & SDH

Analyze, test, simulate, and monitor OC-3/STM-1 and STS-1/STM-0 signals. The board can add and drop T1, E1, T3, or STS-1/STM-0 signals to and from an OC-3/STM-1 signal or T1 and...
Buyer's Guide

Protocol Analysis over Optical Interfaces

LightSpeed1000™ is used for protocol analysis of ATM, PoS, Raw unchannelized and unframed data. In OC-3/STM-1 channelized mode, all 84 T1s (or 63 E1s) can be processed in Tx/Rx...