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Alan Clark, Ph.D.

Telchemy Inc.
VoIP Performance Management Columnist

Alan Clark, Ph.D., founded Telchemy Incorporated in August 1999. Prior to Telchemy, Clark was the Chief Technical Officer at Hayes Corporation and played a key role in establishing industry-wide voice/data integration standards. He held senior R&D positions at Dowty Communications, developing one of the first Voice over Frame Relay products, and British Telecom, supporting the original architecture team for BT Concert.

Dr. Clark is the inventor of the V.42bis data compression algorithm and the architect and editor of the V.58 network management standard. Published widely, he has nine granted and five patents pending and is recognized as a major authority in QoS and Packet Voice research and development.

Telchemy, Incorporated is the global leader in real-time VoIP Fault and Performance Management with its VQmon and SQmon families of call quality monitoring and analysis software. Telchemy is the world's first technology company to provide voice quality management tools that consider the effects of time-varying network impairments and the perceptual effects of time-varying call quality.

VQmon provides listening and conversational quality metrics and detailed diagnostic information on call quality, including packet loss, discards and jitter. VQmon is the first VoIP call quality software that supports RTCP XR (IETF RFC 3611) and enhanced QoS reporting protocols for H.323 and H.248 and SIP.

Founded in 1999, the company has over two years successful field deployment with and markets its technology through leading networking, test and management product companies, including: Acterna, Artiza, Brix Networks, Brooktrout, Delta Information Systems, Empirix, Finisar, Fluke, Global IP Sound, Inet, IpNetFusion, Nortel Networks, Opticom, Pivetal, Spirent, Texas Instruments Tollgrade and Visual Networks.

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[02-28-05] Tech Note: Voice Quality Measurement

[01-24-05] Managing Wireless LANs and WiFi Services