UniXcape!

UniXcape is an internet phone (VoIP), compatible with the SIP protocol. If you subscribe a VoIP to PSTN (=classic telephony) account to a telecom provider, you can reach everyone that has a classic phone line. List of supported features:-Audio with the following codecs: G729-Vdeo with the following codecs: H264-Chat message-multiple calls-audio conferencing-Address book integration-Call history-DTMF (telephone tones) support using SIP INFO or RFC2833