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
T3/E3, OC3/OC12, & STM1/STM4 Testing
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T3 E3 Analysis software compliments the hardware and supports simultaneously monitoring up to 12 x T3 E3 lines (2x Rack units) for all alarms, frame errors, signalling and data. If one adds the Channelized T1 Analyzer software to the system, then the T1s within the T3s can also be analysed in software, 12 x T3 E3 lines (=12*28 T1s) constituting 336 full duplex T1s, or 672 simplex T1s monitored simultaneously using a single Rack unit.
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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
IP Fax/ Modem Testing
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To successfully deploy fax services requires extensive network design, test and traffic engineering. Test equipment can prove valuable in this process, if it can: Generate and receive fax signals in bulk over wired and wireless networks, monitor and distinguish fax signals in real time for traffic engineering and network design purposes, and analyze fax signals after capture for troubleshooting failed or poorly handled calls.
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Product
OC-3/STM-1 And OC-12/STM-4 Analysis And Emulation Card(w/ GigE And USB 2.0)
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. 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 and wire-speed playback of Unchannelized and Channelized ATM, PoS, and RAW Traffic.
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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
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
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.
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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
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
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
Voice Quality Solutions
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Communications is dramatically changing right now, as “mobility” and “IP” technologies such as LTE, Advanced LTE, WiMax, 3G, and Broadband Internet, lead this transformation. As these technologies are rolled out, basic voice/video/data quality will ultimately determine the fate of carriers and end equipment manufacturers. Simple and effective methods of testing voice, video, and data are sorely needed - GL’s Voice, Video, and Data Quality Test Solution provides this flexibility of connecting to and between any network, any service, and any interface.
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Product
MC-MLPPP Analyzer And Emulator
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The Point-to-point protocol (PPP) is a link layer protocol, which encapsulates other network layer protocols like IP for transmission on synchronous (like T1/E1) and asynchronous communications lines. When transmitted over T1/E1 line, PPP frames are based on HDLC frame structure. Two major features of PPP protocol are:*Authentication*Encapsulation of higher layer protocols
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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
Voice Monitoring
VOIP Echo
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*The Voice Band Analyzer (VBA) is an analysis tool for monitoring the quality of voice band traffic (including hybrid echo) over VoIP, TDM and wireless networks*VBA works in conjunction with GL's TDM, Packet, and Wireless non-intrusive capture products, such as T1 and E1 Call Capture and Analysis, VoIP PacketScan&trade, and GSM, CDMA, and 3G Call Capture Products. VBA instantly detects voice file captures and with appropriately installed analysis modules, monitors speech levels, noise levels, and hybrid echo. Other analysis modules such as ITU-T P.561, P.562, P.563, fax and modem analysis, and many others can be hosted as plug-ins.*The VBA application can also operate on pre-captured files. It supports A-Law, µ-Law, 16-bit PCM (Intel), 16-bit PCM (Motorola) and MS Wave file formats.*Required software PKV100 and VBA032 at each probe location and PKV170 PacketScanWEB - Network Surveillance Software*Required hardware - 1U rack PC with sufficient hard disk for capturing over 10,000 calls (80 GB HD) for each VBA colocated with a probe*Additional hardware - PC for PKV100 PacketScan™ Software
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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.
