High Quality Content by WIKIPEDIA articles! The 3GPP has defined the Voice Call Continuity (VCC) specifications in order to describe how a voice call can be persisted, as a mobile phone moves between circuit switched and packet switched radio domains (3GPP TS 23.206). Many mobile phones are becoming available today that support both cellular and other broadband radio technologies. For example, the Nokia N Series and E Series devices support both GSM and WiFi. Similar devices from Sony Ericsson, BlackBerry, Samsung, Motorola and even the Apple iPhone provide comparable dual mode technology. WiMAX support is also being added and further handsets are emerging from Kyocera and other vendors, which provide dual mode technology in CDMA phones.

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