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Grandstream HandyTone Analog Telephone Adapt-ers/IAD series offers a comprehensive line of afford- able VoIP access devices based on Grandstream's innovative and proprietary technology platform. The HandyTone series offers the entry-level IP Telephony user superb audio quality, rich functionalities, interop- erability with the leading 3rd party VoIP providers, and compatibility with most service providers. The Handy-Tone series is compact, works with any cordless phone and fax machines and offers the simplicity of plug and dial, making it ideal for the basic IP telephony user