According to PinPoint entry:
What Does Jajah Voice Add to Lync Online?
- Call any PSTN Phone
- Forward Calls to PSTN Lines
- Domestic and Worldwide Calling
- Make Calls Using Lync Mobile Call Via Work
- Lync Click-to-Dial functionality
- Lync 2010 (Client SDK) appears like it should work with this feature
How Does Jajah voice for Office 365 It Work?
- No Servers or PBX required
- Use Lync 2010 Client as usual
Video about Office 365 and Jajah
- http://voice4lync.jajah.com does NOT appear operable at the moment