| Contact: |
Elizabeth Rubbo
Commetrex Corporation
voice: 770-449-7775 x 320
fax: 770-242-7353
e-mail: erubbo@commetrex.com
http://www.commetrex.com
sales: marketing@commetrex.com |
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Los Angeles, March 6, 2001- Commetrex Corporation announced at the CT Expo 2001 Conference and Exposition that it had achieved the communications industry's highest density G.726 vocoder. G.726, long used in switched-circuit trunking applications, is finding a new home in packet-voice due to its high voice quality, low algorithmic delay, and low MIPS requirements.
G.726, which compresses 61-K BPS voice to 40-K, 32-K, or 16-K BPS, typically consumes 5 MIPS on a Texas Instruments (TI) TMS320C5400 DSP, yielding 20 channels on a single part. Commetrex claims a 50% improvement. TI claims 125 channels on its 300-MHz TMS320C6203 DSP. Commetrex reports 190 channels.
Cliff Schornak, Commetrex CTO, explained: "The TI 'C6000 has two sets of four parallel execution units, so we knew we could process two samples per cycle. But the ADPCM algorithm of G.726 did not lend itself well to keeping all those execution units busy. So we were very pleased when we saw that our implementation had 6 of the 8 units busy most of the time, explaining how we were able to get down to 1.55-mega-cycles per sample."
Steve Rudner, Commetrex' VP, Sales, said: "I am pleased to be able to offer this highly efficient implementation as licensed technology. It is available in an eXpressDSP Algorithm Interface Standard-compliant version, in an MSP Consortium M.100-compliant version, and on our MSP Media Gateway DSP boards.
Commetrex Corporation
Commetrex Corporation, known for its innovations in fax technology, has recently developed the open-communications industry's first platform for system development that supports the industry's two primary standards for open-system environments:the MSP Consortium M.100 software environment for media integration and the ECTF S.100 software environment for application itegration. Both products are available with the company's MSP Media Gateway product line featuring the Texas Instruments TMS320C6000 family of DSPs. The MSP Media Gateway products support voice, fax, high-speed data, VoIP and FoIP. Commetrex also extends its support of the communications system developer to the media-processing algorithm level, and is an active participant in Texas Instrument's Third Party Developer Network.
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