Cisco announced boosted its unified communications capabilities by adding voice-over-Wi-Fi to its current iPhone support by April 2010. Although Cisco mobile currently provides iPhone users with standard Cisco IP capabilities including Mobile connect and visual voicemail, it now wants to provide voice over Wi-Fi as a lower cost way to communicate.    According to Laurent Philonenko, general manager of Cisco's unified communications business unit, the new capability will allow iPhone users to place a call within a Wi-Fi zone without using cellular minutes.   The new version will be free and will be called Cisco Mobile Voice.

Beyond just saving cellular minutes, Cisco Mobile Voice offers some impressive features including “call preservation” which keeps users phone call intact while using other iPhone apps.   The "shake to lock” features allows users to terminate a call with a simple shaking motion.  Cisco is developing an iPhone widget which uses the iPhone accelerometer motion detection; it which incorporates voice-activated dialing by hold the phone up to the ear and speaking.   The voice-over-Wi-Fi capability is expected to be a popular feature and Cisco cited an example of how CDW Corporation has experienced significant savings on its cell phone bills.

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http://www.computerworld.com/s/article/9151798/Cisco_adding_iPhone_app_for_voice_over_Wi_Fi