Visual voicemail

The mobile phone registers with the telecom carrier's Visual Voicemail service using SMS messages to register, check status of the voicemail box, and receive notifications of new voicemails. When a voicemail is desired, the mobile phone downloads the message using the Internet Message Access Protocol and plays the audio file on the device. ==Patent-infringement lawsuits==

Klausner Technologies Inc is a corporation based in Sagaponack, New York, that invented visual voice mail technology in 1994. The company filed US patent #5,572,576 in March 1994 titled "Telephone answering device linking displayed data with recorded audio message", The United States Patent and Trademark Office awarded the patent on November, 5th 1996 to inventors Judah Klausner and Robert Hotto. From 2005 to 2012, Klausner Technologies Inc, whose CEO is Judah Klausner, one of the inventors listed on the '576 patent, brought dozens of lawsuits against Apple, Callware, Google, Microsoft, Oracle, MetroPCS, Digium, Schmooze Com Inc and others for patent infringement. In 2008, Apple purchased a license to Klausner's visual voicemail technology. In August 2011, a patent was granted to Apple for "Voicemail manager for portable multifunction device". In Apple's granted patent, Apple cited two Klausner Technology patents (US Pat #5,283,818 and US Pat #5,333,266) as being prior art. ==References==