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.
- (301) 670-4784
- (301) 670-9187
- info@gl.com
- 818 West Diamond Avenue
Third Floor
Gaithersburg, MD 20878
United States of America
-
product
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.
-
product
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.
-
product
Voice Monitoring
VOIP Echo
*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
-
product
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.
-
product
Multi-Interface TDM, Optical, And Packet/IP Rackmount & Probe Test Platforms
mTOP™
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.
-
product
VoIP Testing
VQuad™
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.
-
product
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.
-
product
Rack Based Test Solutions
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.
-
product
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
-
product
Protocol Emulations
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
-
product
MC-MLPPP Analyzer And Emulator
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
-
product
Hand Portable Test Instruments
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.
-
product
Network Impairment Simulator
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.
-
product
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.
-
product
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.
