GL Announces G.722 Wideband Audio Codec Support Across TDM and VoIP Platforms

GL Communications Inc., announced today the release of its enhanced VoIP and T1 E1 platform applications with G.722 Wideband Audio Codec support.

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G.711 and G.722 Codec Frequency Response

GL products support G.722 with a variety of signaling and audio processing applications in both VoIP and TDM. Using these applications, one can easily emulate, analyze, and troubleshoot audio signaling and quality over both VoIP and TDM platforms.

Gaithersburg, MD (PRWEB) May 09, 2014

GL Communications Inc., announced today the release of its enhanced VoIP and T1 E1 platform applications with G.722 Wideband Audio Codec support.

Speaking to reporters, Mr. Vijay Kulkarni CEO of the company said, “Despite revolutionary advances in telecommunications technology, audio quality has remained virtually unchanged for nearly 50 years! This may change with the penetration of VoIP in wired networks and Voice over LTE (VoLTE) for wireless networks. G.722 is a wideband codec with more natural sound, better clarity, and intelligibility. And very importantly, it’s license free. Almost all VoIP phones have the support of G.722 codec and are used within enterprise and VPNs. Radio stations also use it for their audio transmissions prior to over the air transmission, since PSTN quality is just not good enough.

He added, “G.722 wideband audio codec has been around for some time (since ITU standardization in 1988). In comparision with G.711, the G.722 codec has the following superior characteristics:

.normally operates at 64 kbps (similar to G.711, A-law and u-law), although it can also operate at 56 kbps, or 48 kbps
.is license free
.has better audio frequency response due to 16 kHz sampling and 14 bit resolution, therefore better speech quality than G.711 codecs
.used to transmit higher quality audio over 64 kbps ISDN circuits - sometimes called “program audio” for radio stations
.widely used in VoIP networks, wherein VoIP phones can easily (free license and technically simple) implement G.722, instead of G.711 with the same RTP overhead."

Mr.Kulkarni further explained, “GL Communications products support G.722 with a variety of signaling and audio processing applications in both VoIP and TDM. Using these applications, one can easily emulate, analyze, and troubleshoot audio signaling and quality over both VoIP and TDM platforms.

The GL applications that support G.722 over IP are : PacketScan™, PacketGen™, VQuad™ SIP and all our MAPS™ Emulation products. PacketScan™ is a versatile Packet Analyzer for VoIP that supports many signaling protocols like H.323, SIP, RTP, Skinny, Megaco, and more. It also supports many codecs including G.722. And PacketGen™ is a SIP protocol emulator. And VQuad™ SIP, a voice and data quality test tool."

While explaining TDM platform applications, he said, “The GL applications that support G.722 over TDM are ISDN Analyzer, Call Capture & Analysis (CCA), Voice Band Analyzer (VBA) application, and Real-Time Multi-Channel Audio Bridge and more.

Voice Band Analyzer (VBA) application operates in near real time, processing the signal files recorded by Call Capture Application (CCA) has been enhanced to support G.722 at 64 kbps. It captures and decompresses G.722 to 14-bit PCM file.

Real-Time Multi-Channel Audio Bridge application provides a bridge between T1/E1 timeslots and single or multichannel sound card(s). Supported codecs data rates are - a-law, µ-law, 16-bit PCM (Intel), 16-bit PCM (Motorola), G.726 (40 Kbps, 32 Kbps, 24 Kbps, and 16 Kbps) and now G.722 (64 kbps) as well. Mono and Stereo audio modes are supported.

The Audio Compression Manager (ACM) Tester is used to compress and decompress audio files. This utility also supports a wide range of codecs, including G.722 wideband codec. It also supports compressing voice files (Raw PCM and *.WAV formats) and decompressing the compressed files and *.BIN (binary audio files) files.

Oscilloscope and Power Spectral applications include options for displaying all signaling formats – a-law, µ-law, PCM 16 bit, PCM 13 bit, PCM 14 bit, PCM 8 bit and different byte order for INTEL (Little Endian) and MOTOROLA (Big Endian) 16 bit signals sampled at 16 KHz can also be displayed.”

About GL Communications Inc.,

Founded in 1986, GL Communications Inc. is a leading supplier of test, monitoring, and analysis equipment for TDM, Wireless, IP and VoIP networks. Unlike conventional test equipment, GL's test platforms provide visualization, capture, storage, and convenient features like portability, remotability, and scripting.

GL Communications has over the years worked with major telecom equipment vendors (EVs) and system integrators to meet the testing requirements arising at various stages of telecommunications product development life cycle. With its proven expertise of over 25 years, GL has a comprehensive suite of telecom testing solutions to verify and ensure 'quality and reliability' of variety of telecom networks including Wireless, and high-speed fiber optic lines.

GL's test tools range from simple PC-based software test tool to all-encompassing hardware units with futuristic expansion capabilities. GL's test solutions cover wide array of networks – 4G (LTE), 3G, IP, Ethernet, T1, T3, E1, E3, OC-3/STM-1, OC-12/STM-4, and traditional PSTN networks.

GL's tools are widely used by the telecommunication industry for conformance testing, automated stress/load testing, performance testing, remote accessibility, centralized web-based control and analysis, fault testing and analysis, and customized testing.