I have Ubuntu 10.04 installed as a desktop OS and a Symbian-based smartphone (Nokia N79). How can I use my desktop system with a headset to make and receive usual mobile phone calls using a connected (via cable or Bluetooth) smartphone?
You can try this: http://nohands.sourceforge.net/
From the website description:
You should try it to discover if it's compatible with your device.
Can install Hands Free Console by using ppa:sebastian-ruehl/nohands repository.
There is the list of packages needed to install, at Sourcrforge.