San Francisco - RealNetworks, a provider of media delivery technology and content subscription services, on Tuesday announced the launch of a new 3G mobile feature, Multimedia Ringback Services, which lets users incorporate audio, images and video into what callers experience before they are connected. The service has already been deployed in Korea on SK Telecom's 3G network. Real said its mobile services are currently available through 77 carriers in 37 countries.

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http://www.realnetworks.com/company/press/releases/2007/ctia07-3.html