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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T3/E3, OC3/OC12, & STM1/STM4 Testing
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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Multi-Functional Ethernet Test Solution
PacketExpert™
PacketExpert™ 10GX is a comprehensive Ethernet/IP test solution supporting industry standard functionalities including wirespeed bit error rate testing (BERT), RFC 2544 / Y.1564 / RFC 6349 tests, packet capture, event-driven triggers and actions, traffic playback, impairment generation, stacked VLAN/MPLS tests, and many others.
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Testing LTE, And VoLTE
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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IP Fax/ Modem Testing
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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GL Products Online & Interactive Demos
*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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Digital And Analog Call Simulation
GL’s T1 E1/Analog Test Suite supports analysis and emulation of legacy protocols (MFCR2, E&M, SS1/SS4, SS5, Voice Call Signaling, 2-wire Call, SF Signaling (DTMF)) applicable to Federal Aviation Administration "FAA" within their National Airspace System "NAS" Ground-to-Ground Air Traffic Control Network and Voice System (NVS) to Analog Interphone.
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Analog Platforms
(T1/E1/T3/E3/OC-3/OC-12/STM-1/STM-4)
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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Fax/ Modem Testing
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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Protocol Simulation
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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Voice Quality Solutions
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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T1 E1 Testing
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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Direct Access To T1 E1 DS0 On OC-3/12 STM-1/4 On LightSpeed1000™
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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Wireless Protocol Analysis
GL's protocol analyzer provides monitoring a communication link in accordance with industry protocol standards by non-intrusively tapping the network under test. The simple framework of the protocol analysis software helps you easily identify the improper sequence of protocol messages, and filter out frames causing the protocol violation.
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Network Surveillance System
The network backbone contains a wealth of information that can be monitored and collected to support diagnostic, troubleshooting, and fraud prevention activities. Surveillance of network characteristics is becoming more important than ever before. Few important aspects of network surveillance include, Performance Monitoring, Security, Fraud Prevention, Physical Layer monitoring, Billing Verification, Remote Protocol Analysis, Failure Prediction, Traffic Engineering, Call Quality Monitoring and Troubleshooting.
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Voice Quality Solutions
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.
