GL Communications Inc

GL Communications Inc 40+ years delivering advanced voice and network testing solutions—from PSTN to high-speed fiber networks worldwide. GL Communications Inc.

provides unique, targeted PC-based test, analysis and simulation products and consulting services to the worldwide telecommunications industry. A privately held company, founded in 1986, GL offers customers a team of seasoned experts with a broad understanding of the specific challenges they face and the technical creativity to meet complex requirements. GL provides customers with a wide range of

easily-adapted, cost-effective, and highly-reliable products and services designed to aid the telecommunications engineer.

Exciting news! We're thrilled to announce that we are exhibiting at Airspace World 2026 in Lisbon!📅 Save the date: 26–28...
04/06/2026

Exciting news! We're thrilled to announce that we are exhibiting at Airspace World 2026 in Lisbon!
📅 Save the date: 26–28 May 2026
Join us to explore our latest Air Traffic Management Test Tools including ED-137 Radio, Telephone and Recorder Emulators as well as ED-138 Network Performance Monitoring Tools. We can’t wait to meet you there!
👉 Learn more and register now: https://www.gl.com/meet-and-greet-schedule-Airspaceworld-2026.php?listname=fb

✨ Thank You, Hong Kong! ✨AIRSPACE ASIA PACIFIC 2025 (Dec 9–11) was a fantastic success, and we sincerely thank everyone ...
01/08/2026

✨ Thank You, Hong Kong! ✨
AIRSPACE ASIA PACIFIC 2025 (Dec 9–11) was a fantastic success, and we sincerely thank everyone who visited GL Communications at Stand . The strong interest in our ED-137 emulators and ED-138 network monitoring solutions reinforces the industry’s focus on reliable testing, performance validation, and next-generation Air Traffic Management networks.

We truly appreciated the engaging discussions and valuable connections throughout the event.

👉 Next stop: Lisbon!
We look forward to meeting you again at our upcoming event in Lisbon later this year. See you there!

✈️

12/22/2025
Schedule a meeting here: https://www.gl.com/meet-and-greet-schedule-AirspaceAsiaPacific-2025.php?event=FBJoin GL Communi...
11/10/2025

Schedule a meeting here: https://www.gl.com/meet-and-greet-schedule-AirspaceAsiaPacific-2025.php?event=FB

Join GL Communication Inc at Airspace Asia Pacific 2025, Hong Kong, China.
Stand: B18
Date: Dec 9th -11th, 2025



Please join GL Communications Inc. at the Airspace Asia Pacific being held Dec 9th -11th, 2025 in Hong Kong, China. We will be at Stand and would welcome your visit.

GL experts will showcase our latest Air Traffic Management Test Tools including ED-137 Radio, Telephone and Recorder Emulators as well as ED-138 Network Performance Monitoring Tools.

GL test tools for next generation Air Traffic Management (ATM) offer signaling and traffic simulation per ED-137, monitoring quality of service per ED-138, and critical network delay measurements. With customized test solutions, the ATM core network and all its underlying entities (CWP, GRS, VoIP Gateways) can be accurately tested for timing, voice quality, performance, and functionalities.

The GL test tools are very dynamic with frequent updates and as such all of our emulators (Radio, Telephone and Recorder) now support ED-137C Change 1 & 2 standards and IPv6 addressing. Emulators are also validated against EUROCAE's latest VOTER tool to confirm adherence to ED-137 standards.

The GL ED-137 and ED-138 Voice over IP Test Tools have been widely welcomed by Global Air Navigation Service Providers and VCS/Radio/Recorder companies alike, who have found them to be essential tools during development phase, functionality testing, performance testing, Factory Acceptance Test phases, deployment phase and for field testing.

Register here: https://attendee.gotowebinar.com/register/5916539590163292508Webinar Title: Comprehensive 5G Wireless Lab...
10/24/2025

Register here: https://attendee.gotowebinar.com/register/5916539590163292508

Webinar Title: Comprehensive 5G Wireless Lab Testing Solutions
Date and Time: Thursday, November 20th, 2025 @ 10:00 AM US EST
Presenters: Karthik Ramalingam and Bhavya P

GL’s 5G Lab Testing Solution provides a standards-compliant environment to emulate and validate the complete 5G Core Network — all within a flexible lab setting. It enables detailed functional and performance testing of key 5G Core components, helping teams verify network behaviour before deployment.
The MAPS™ 5GC Network Emulator can emulate thousands of UEs and gNBs, along with 5G Core Network elements such as AMF, SMF, UPF, AUSF, UDM, SMSF, and EIR. It is designed to test 5G base stations (gNBs) and Core Network Functions (NFs) in compliance with 3GPP standards.

Key capabilities include:
• Testing device connectivity and seamless interoperability between 5G and LTE
• Validating IMS-based voice and multimedia services over 5G
• Interoperability and roaming scenarios

Built on GL’s MAPS™ platform, the solution emulates essential 5G Core interfaces across both control and user planes, enabling realistic end-to-end test scenarios. The solution helps engineers and testers evaluate 5G Core functionality, interoperability, and performance in a practical lab environment.

Please attend this webinar to learn more about these solutions!

Webinar - ED-137 Radio Testing and ED-138 MonitoringContact Us: https://www.gl.com/inforequestform.phpProduct PagesTesti...
05/30/2025

Webinar - ED-137 Radio Testing and ED-138 Monitoring

Contact Us: https://www.gl.com/inforequestform.php

Product Pages

Testing ED-137 and ED-138 Interoperability Standards for VoIP Air Traffic Control: https://www.gl.com/test-solutions-for-voip-air-traffic-management.html

MAPS™ ED-137 Radio Emulator: https://www.gl.com/air-traffic-management-maps-ed137-radio-simulation.html

MAPS™ ED-137 Recorder Emulator: https://www.gl.com/air-traffic-management-maps-ed137-recorder-emulation.html

MAPS™ ED-137 Telephone Emulator: https://www.gl.com/air-traffic-management-maps-ed137-controller-simulation.html

https://www.youtube.com/watch?v=f-yj1xIXWT4

OverviewGL Communications exhibited at the Airspace World Conference in Lisbon, Portugal (May 13 to 15, 2025). Our experts presented the latest information a...

Live Webinar - ED-137 Radio Testing and ED-138 MonitoringDate : 29th May 2025 @ 9:30 AM EDTRegister here: https://regist...
05/22/2025

Live Webinar - ED-137 Radio Testing and ED-138 Monitoring
Date : 29th May 2025 @ 9:30 AM EDT
Register here: https://register.gotowebinar.com/register/3020613974251713112

In this webinar, we will focus on our latest enhancements and solutions for the Air Traffic Management industry and discuss the way forward to ED-137 and ED-138 test solutions. With GL’s customized test solutions for ATM, the ATM core network and all its entities (CWPs, GRSs, VoIP Gateways, and Recorders) can be accurately tested for functionalities, performance, voice quality, and timing.

GL’s emulators (Radio, Telephone, and Recorder) now support ED-137C Change 1 and Change 2 standards along with support for IPv6 addressing. Emulators are also validated against EUROCAE's latest VOTER tool to confirm adherence to ED-137 standards. Register for this webinar to gain more insight.

What you will learn
• How to comprehensively test ED-137 Radios and VCS using emulators
• How to simulate Recorder functionality at CWP, GRS, and Recorder endpoints
• How to measure Critical Delay by precisely timing events between CWPs / Gateways / Radios
• How to measure end-to-end Voice Quality (PESQ/POLQA) in ATM networks
• How to monitor Air Traffic Management over IP network for voice quality, performance, reliability, and functionality

Register here: https://register.gotowebinar.com/register/3020613974251713112

We’re here at Airspace World 2025 – ready to connect, collaborate, and innovate. Booth
05/13/2025

We’re here at Airspace World 2025 – ready to connect, collaborate, and innovate. Booth

Meet Us Today! at the Airspace World - May 13th -15th, 2025 in Lisbon, Portugal. We will be at Stand   and would welcome...
05/13/2025

Meet Us Today! at the Airspace World - May 13th -15th, 2025 in Lisbon, Portugal. We will be at Stand and would welcome your visit.

Address

818 W Diamond Avenue
Gaithersburg, MD
20878

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm

Telephone

+13016704784

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