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GL Communications Inc

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GL Enhances ED-137 Radio Emulator

Gaithersburg, MD, February 15, 2017 --( GL Communications Inc. announced today its enhanced MAPS™ ED137 Radio Emulator for Air Traffic Management.

Speaking to the press, Mr.Jagdish Vadalia, a Senior Manager for Product Development of the company said, “Air Traffic Control is migrating to VoIP architecture and away from an outdated analog infrastructure. Among many other solutions for testing this new Air Traffic Control (ATC) network, GL offers MAPS™ ED-137 Radio, to simulate VoIP Air-Ground calls (as per EUROCAE ED137_1B: Radio) and MAPS™ ED-137 Telephone to simulate VoIP Ground-Ground calls (as per EUROCAE ED137_2B: Telephone).”

He added, “The latest release adds important new enhancements to MAPS™ ED-137 Radio Emulator. These include: Multiple Radio Simulation, IP Address Spoofing, Linked Session Management and support for new user-events that can be applied dynamically on an established call.

“Software provides complete control over call scenarios testing, and the ability to customize the network parameters for signalling and VoIP traffic. It has the capability of generating more than 500 simultaneous calls on a core i7 system.”

Mr. Vadalia further emphasizing on enhanced features explained, “Enhanced MAPS™ ED-137 Radio allows a user to simulate multiple Radios in a single instance of MAPS™, up to 200 Radios (with unique IP addresses) in one system with each simulated Radio having its own set of parameters defined in XML-based configuration files. Each simulated Radio is a logically separated Radio with similar capabilities. Colour codes are used to sort and group all related calls and make it easier to visually distinguish calls belonging to a particular Radio.

“The IP spoofing feature allows multiple CWPs/Radios to be simulated using unique IP address from a single system. User-specified IP addresses in Profile will be created as virtual IP addresses on the NIC interface used by the system.

“The Linked Session functionality provides the Ground Radio Station (GRS) endpoint, an opportunity to detect SIP sessions which are coming from the same user but from different equipment (i.e. different IP Address) to guarantee higher service availability. So, GRS can identify the calls coming with same user part in ‘From Address’ but with different IP/host address and with 'ls-pl' SDP parameter included. It treats the linked sessions as one single logical session to radio.”

He further added, “Many events can be applied on an ongoing call either from MAPS™ CWP or while receiving the calls at MAPS™ GRS. Some of the supported events include: Apply CLD, ReInvite, Receive Traffic, Apply RRC, Impair, Speaker ON, Apply SQI and the like.”

About GL Communications Inc

GL Communications Inc, is a global provider of test and measurement solutions and has over the years worked with major telecom equipment vendors, service providers, and system integrators to meet the testing requirements arising at various stages of telecom products development life cycle.

GL offers a broad set of test solutions that help perform all types of testing on networks, from initial system design, to fine-tuning, troubleshooting, live deployment, and monitoring. The products are widely used to verify and ensure "quality and reliability" of Wireless (4G LTE, 3G, 2G), SONET/SDH, IP, TDM, and PSTN networks.

GL core product development is backed by a strong team of R&D experts to match evolving market and technical challenges in a most cost-effective and innovative way.

Shelley Sharma
Phone: 301-670-4784
E-mail: info at
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GL Communications Inc
Mr. Shelley Sharma

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