[dokument]

- Hosting personal website from my DMZ at home.

- SDR and packet radio (Direwolf) projects

- Kodi

- rpi zeroW with usb serial for connecting back to my house from work/travel.

I had more projects, but I've been able to replace them all with ESP8266's. Rpi is overkill to do simple things like toggle a gpio pin or take temperature readings. Use it if you have it, but it's nice freeing up extra rpi's with a $2 ESP.

[inson]

I am planning to build Voip server using raspberry pi. Any idea how to start with this?

[mytdi]

Take a look at RasPBX (http://www.raspberry-asterisk.org).