GL Communications Inc.
GL Communications Inc. has over 30 years of experience in the telecommunications industry providing equipment and consulting services. GL has a comprehensive suite of testing solutions to verify network performance in various telecom networks including wireless, fiber optic and traditional land line networks.
- +1 (301) 670-4784
- (301) 670-9187
- info@gl.com
- 818 West Diamond Avenue
Third Floor
Gaithersburg, MD 20878
United States of America
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Product
IP / VoIP Analysis & Simulation
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GL offers high density Ethernet/IP tester variant which includes mTOP™ 1U/2U rack mount enclosures within which PacketExpert™ portable USB units are stacked to provide high density GigE ports form factor solution for testing GigE switches, routers and network conditions.
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Product
Hand Portable Test Instruments
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GL’s PacketExpert™ 10G provides comprehensive testing of 10 Gbps wirespeed Ethernet/IP networks. It has two 10 Gbps Optical ports, and two 10/100/1000 Mbps Electrical/Optical ports capable of BERT, Smart Loopback, RFC 2544, ExpertSAM, Record and Playback, IPLinkSim™ and PacketBroker functionalities.
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Product
Multi-Interface TDM, Optical, And Packet/IP Rackmount & Probe Test Platforms
mTOP™
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Most equipment manufacturers and large enterprises prefer rack-based test tools as they are compact and higher density form factor solution for testing, monitoring, and troubleshooting network conditions. GL’s Multiple TDM Optical and Packet (mTOP™) rack enclosure can house any combination of USB based test equipment which are easily deployed and securely fixed to an equipment rack to provide extraordinary scalability to test switches, routers and end-to-end networks. These rack based platforms incorporates the basic test unit along with the necessary PC hardware, Windows® 10 64-bit operating system and remote accessibility via scripting and remote desktop. There are no moving parts with the unit, so reliability and longevity are integral. GL’s latest mTOP™ Probe stand-alone hardware variant is an all-in-one self-contained test instrument. The mTOP™ Probe can include any of the multiple TDM Optical and Packet interfaces USB device combined with the PC into one single box. The comprehensive mTOP™ Probe hardware unit is designed for easier portability and convenient for field testing which incorporates the testing features for multiple interfaces along with necessary PC hardware in a single box. GL’s USB based test equipment - PacketExpert™ (Ethernet), tProbe™ (T1/E1), USB T3/E3 (TDM), Dual UTAs (Analog/Wireless), and LightSpeed1000™ (SONET SDH) to support multiple interfaces in a compact rack space or included in a portable Probe unit.
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Product
Wireless Protocol Emulation
MAPS
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Message Automation & Protocol Simulation (MAPS™) is a protocol simulation and conformance test tool that supports a variety of protocols such as SIP, MEGACO, MGCP, SS7, ISDN, GSM, MAP, CAS, LTE, UMTS, SS7 SIGTRAN, ISDN SIGTRAN, SIP I, GSM AoIP, Diameter and others. This message automation tool covers solutions for both protocol simulation and protocol analysis. Along with automation capability, the application gives users the unlimited ability to edit messages and control scenarios.
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Product
Testing LTE, And VoLTE
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Long Term Evolution (LTE) is the so called 4th Generation (4G) mobile standard in the rapidly evolving mobile technologies. Its distinguishing feature is an all IP infrastructure and significantly greater air interface bandwidth to the mobile handset. It was developed as an enhancement to the existing 3G UMTS System (Universal Mobile Telecommunications System) to provide users enhanced mobile radio and internet access.
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Product
Analog Platforms
(T1/E1/T3/E3/OC-3/OC-12/STM-1/STM-4)
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Almost all T1 E1 T3 E3 Testers can be accommodated into rack-based units. Multiple rack units can be stacked together for greater scalability. Shown below is a rack based tProbe™ T1 E1 / T3 E3 Analyzer unit, and a Channelized T3 E3 Analyzer unit supporting 6 T3s (6 * 672 DS0s). Such customized rack serves the purpose of handling multiple communications lines and test complex functionalities.
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Product
T1 E1 Testing
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T1/E1 carriers are used extensively throughout the world for carrying large volumes of call containing both voice and data. Their popularity can be attributed to their high reliability, manageability and flexibility. The available digitized channels, 24 for T1 and 32 for E1 can be used for carrying voice and/or data. Further, the carriers can be used separately or they can be combined in order to provide higher transmission bandwidth.
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Product
Network Impairment Simulator
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Testing system performance under realistic network conditions requires the introduction of impairments that could be expected to be seen on networks, especially public networks which are uncontrolled. There are a number of ways to do this. A basic method is to use network simulation devices that can emulate conditions expected to be encountered.
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Product
Voice Quality Solutions
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Wireless networks can impair voice, video, and data quality by various means including poor mobile phone quality, voice compression and decompression algorithms, video compression and decompression algorithms, delay, loss or gain in speech levels, noise, acoustic and landline echo, and other distortions. GL provides a compact and portable solution for Wireless Devices, and Mobile Radio testing.
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Product
Protocol Emulations
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Message automation and protocol simulation test tool that supports simulation of a variety of protocols (VoIP/IP, TDM, Analog, Wireless) all within a single framework. The application includes various test plans and test cases to support the testing of real-time entities
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Product
Communication Network Lab (5G, 4G, 3G, 2G, IP, TDM)
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GL’s End-to-End Wireless Network Simulation Test Suite provides you an advanced full-fledged “Live Network” at your company premises in any customized package to suit test requirements.
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Product
Protocol Simulation
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Message automation and protocol simulation test tool that supports simulation of a variety of protocols (VoIP/IP, TDM, Analog, Wireless) all within a single framework. The application includes various test plans and test cases to support the testing of real-time entities
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Product
VoIP Testing
VQuad™
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Testing on the extreme end-point of a VoIP softphone network has become a priority for many service providers. This method of testing represents what an end user is actually experiencing. Voice quality testing within VoIP networks is growing; a major concern is testing VoIP softphones that will be used with VoIP networks. GL’s VQuad™ with VoIP option along with Voice Quality Testing (VQT PESQ) software provides the ability to perform manual or automated Wideband audio tests using HD codecs on the VoIP network.
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Product
Direct Access To T1 E1 DS0 On OC-3/12 STM-1/4 On LightSpeed1000™
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Voice, data, and video traffic is exploding as smartphones, IP TV, video streaming, and "cloud" based services takeoff. A majority of the backbone transport for these applications continues to be SONET and SDH optical transmission networks. A dominant protocol for IP transport is PoS (Packet over SONET) and another is ATM (Asynchronous Transfer Mode). Both schemes are packet based, with ATM using fixed size packets of 53 bytes called "cells", and PoS using variable packet sizes closely matching to Ethernet frames.
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Product
GL Products Online & Interactive Demos
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*NetSurveyorWeb™ is a centralized VoIP network monitoring system. A number of GL's PacketScan™ probes and/or,PacketProbes™ are deployed in remote locations across the network to passively monitor VoIP traffic. Whenever a monitored call completes, the scan/probe calculates a variety of quality metrics (MOS, loss, delay, jitter, etc) and sends the metrics to the central Oracle database for storage.**The PacketScan™ is a feature-robust Windows® based software tool that captures and monitors live IP traffic. In the VoIP world, it can monitor and measure SIP, H323, Megaco, MGCP, T.38 and video calls. In addition to quality metricsPacketScan™ also captures signaling information and sends that to the NetSurveyorWeb™ database as well.**GL's PacketProbe™ is an advanced CPE(Customer Premises Equipment) based VoIP monitoring reporting and diagnostic appliance, stemming from GL's suite of market leading voice analysis tools.
