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Teridian Semiconductor’s 73M1866 and 73M1966 offer an innovative approach in addressing the Foreign-Exchange-Office (FXO) function. These two solutions facilitate good voice quality and significant BOM cost reductions in business critical and residential Voice-over-IP (VoIP) applications. The Teridian 73M1866 is a single-chip solution that uses the company’s MicroDAA™ or data access arrangement (DAA) function designed exclusively for FXO of Voice-over-IP (VoIP) systems. The device provides the majority of the circuitry to connect PCM-formatted voice channels to a PSTN via a two-wire, twisted-pair interface. The ability to support host-side power makes the device independent of PSTN loop variations, generating robust performance in any deployment environment. The 73M1866 and 73M1966 are suited for "PSTN lifeline" support for VoIP equipment, small and medium enterprise integrated service routers, converged media gateways and VoIP–PBX, and residential/CPE gateways. This technology is also available for extended isolation requirements as a chip set, designated the 73M1966.

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Wireless Design & Development