Idefisk is a VoIP client that supports IAX/IAX2 (for people running Asterisk) and SIP. It comes with an address book and call history log.Note: Idefisk has been rebranded ZoIPer with two different versions: Free and Biz. From an email I received from Mike, it appears so many features have been stripped from ZOIPER Free that one is better off sticking with Idefisk. As such, I am making my copy available for direct download. Download the installer and extract to a folder of your choice. Remove $PLUGINSDIR and NSIS.nsi. Launch Idefisk 2 Free.exe