Free_Sip_Phone is a SIP based VoIP soft phone, which integrates robust technologies such as SIP stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. Free_Sip_Phone is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile and pc to landline. Free_Sip_Phone offers you a Free_Sip_Phone number to make free pc to pc calls and receive free incoming calls from any phone. You can make international calls to any PSTN or mobile phone thus converting your laptop or desktop into a second telephone. Free_Sip_Phone also offers outstanding features such as Video Call, Follow Me Service, Voice Mail, Video Chat, MP3 Player, Video Streaming, Fax and Online Search. The peer to peer Video Call facility enables you to call your Free_Sip_Phone buddy with live video action in progress.Free_Sip_Phone Follow Me Service enables you to get calls redirected to your landline or mobile phone when you are not online. You can also receive voice mails to your e mail When you are offline and unable to answer your calls. Through Free_Sip_Phone, you can have a live video chat with your Free_Sip_Phone buddy. More than that, you can call your buddy’s Free_Sip_Phone, mobile, home or office number with a single click even while chatting. You can also listen to your favorite music through an MP3 player embedded in Free_Sip_Phone. You can add your favorite songs to your Play List and listen to them even while you chat with your buddies. Free_Sip_Phone fulfils your entertainment needs by offering you video streaming. Choose your realm of interest - whether sports, music or whatever - you can watch your favorite videos instantly. Through Free_Sip_Phone, you can also receive fax directly to your e mail when you are offline.