Research In Motion Limited has announced a new service called BlackBerry Mobile Voice System 5, which will offer voice-over-WiFi calling from later this year. BlackBerry MVS 5 works with Cisco Unified Communications Manager to provide a business user with the ability to use their regular fixed-line office telephone number and extension from their BlackBerry device. It means businesses can let their staff receive calls on their regular office phone numbers whenever they're connected to a WiFi network.

Calls made through BlackBerry MVS 5 are routed through the company's Private Branch Exchange (PBX) system. Employees also benefit from the convenience of a single work phone number shared between their desk phone and BlackBerry smartphone. Incoming calls can ring simultaneously on the employee’s desk phone and their BlackBerry.

Klausner Technologies has filed a lawsuit against HTC, claiming that HTC has infringed its Visual Voicemail patents.

The company owns 25 Visual Voicemail patents in the US, Canada, Europe, Taiwan, Korea and Japan.

A new study from ABI Research suggests Orange's recent investment in High Definition voice services is the beginning of a HD voice boom. Its Mobile HD Voice report says today's "virtually nonexistent" market will grow dramatically from 2013, with about 487 million mobile subscribers using HD-enabled handsets on compatible networks in 2015.

NTT DOCOMO, Renesas Electronics, Fujitsu, NEC, Panasonic and Sharp have announced an agreement that'll see them working together to develop a new application platform for mobile phones. The new platform, which promises improved processing speeds for high-quality video and 3D graphics, is intended to cut development time and costs for the four Japanese mobile phone manufacturers.

The new platform will be compatible with both the Symbian and Linux operating systems, while Android compatibility hasn't been ruled out. Mobile phones incorporating the new platform are expected to be seen in late 2011 or early 2012.