Cisco's first VoIP phone, code name Telecaster and released in 1997. Over 30 million in use today. Menlo worked with IDEO providing telephony acoustic engineering. Transducers and acoustic aspects essentially unchanged for over a decade.

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Menlo worked for Cisco and IDEO on all electro-acoustic aspects of the Telecaster project which was Cisco’s game changing entry into the VoIP enterprise phone business.