GL Communications Inc.
Consulting Services > Expertise
Telecom Test and Measurement
TDM Analyzers/Emulators
Ultra T1 or E1 Analyzer
The Ultra T1 or E1 Analysis Cards (PCI) plug into any PC and convert it into a complete T1 and E1 test platform.
Portable USB T1/E1 Analyzer
GL's new USB based T1 E1 Analyzer is the world's most powerful, full featured, and complete BERT, voiceband, data, signaling, and protocol analyzer on the market.
Ultra T3 Analyzer
The Ultra T3 Analysis Cards (PCI) plug into PC expansion slots and provide digital T3 input/output for analyzing, testing, simulating, and monitoring T3 signals.
OC-3 / STM-1 Analyzer
The Ultra OC-3 / STM-1 card (PCI) plugs into a PC expansion slot for analyzing, testing, simulating, and monitoring OC-3 and STS-1 signals.
VoIP Analyzers/Simulators
PacketGen™ is a PC-based real-time VoIP bulk call generator for stress testing and precise analysis of the VoIP network equipment.


PacketScan™ is a real-time VoIP analyzer that captures live IP traffic, and segregates them into SIP/H323 calls and collects statistics about the calls.

RTP Toolbox™

RTP ToolBox™ application is used to create, monitor, analyze, and terminate multiple RTP traffic streams (sessions).


Message Automation & Protocol Simulation (MAPS™) is a SIP test tool/traffic generator which is used to perform protocol conformance testing (SIP protocol implementations, Megaco).
Voice Quality Analyzer

GL's Voice Quality Testing (VQT), accessed through an easy to use GUI interface, provides the voice quality measurement and analysis tools for all types of networks carrying voice traffic.

Wireless Voice Quality Analyzer

GL's Wireless VQT solution provides all the necessary equipment and functionality in order to fully manage voice quality testing on wireless networks. Adding to its existing wireless test solution, GL introduces Wireless VQT Drive-Testing, which provides the necessary portable equipment and functionality for a true mobile test.

The DCOSS converts any windows based PC (Windows 2000/XP) into a central office complete with T1 and/or E1 trunks as well as Analog and/or BRI ISDN phone interfaces.
The DCOSS APS (Analog Phone Simulator) converts a GL DCOSS into an analog phone simulator that simulates a bank of up to 384 analog telephones.
VQuad™ with Analog option
GL's VQuad™ w/ FXO Analog option along with Voice Quality Testing (VQT) provides the complete automated network testing solution including four analog 2-wire interfaces (RJ-11) and the voice quality measurement and analysis tools.
Protocol Analyzers

GL's Analysis software provides customers with a wide range of telecommunications testing options, including protocol analysis (ISDN, SS7, GR-303, Frame Relay, HDLC, V5.X, ATM, GSM, GPRS, etc.)

Echo Path Delay and Loss Simulators/Analyzers

GL Communications has the broadest range of testing solutions for echo cancellers (EC).

Our hardware platforms for testing EC software can be Ultra T1/E1 PCI Cards, or the portable USB based Laptop T1/E1 Units, or Ethernet, or no hardware whatsoever.

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