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ITU-T Standards Compliant Soft-Modems for the Set-Top Box (STB)

The soft-modems are compliant with specific ITU-T standards and yield comparable reliability and quality to traditional hardware modem chipsets with reduced costs for large volume production.

The modem software run on a DSP or microprocessor along with other control software and require an analog front-end. These modular, re-locatable and reentrant soft-modems support multi-channel capability and have been ported on all common embedded hardware platforms. They are operating within multi-tasking environments or as stand-alone tasks and are optimized for fixed-point arithmetic.

GAO’s soft-modems are the ideal solution for satellite STB units. The lower speed modems, using V.22 (1.2kbps) or V.22bis (2.4kbps) standards, provide a speedy hand-shaking process and a sufficient bit rate to complete the typical low bandwidth transaction within seconds. The higher speed modems include V.34 (33.6kbps), V.90 (56kbps) and V.92 (56kbps). V.92 offers a higher upstream data rate of 48kbps.The high-speed soft-modems are typically utilized in high-end satellite STBs to support advanced interactive features requiring higher bit rates.

About GAO Research Inc.
GAO Research Inc. (www.GAOResearch.com) is a recognized international leading provider of communications software to telecom and electronics companies and provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.
Visit http://www.GAOResearch.com for more information.

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