Sip Phone Software

Freecallme PcPhone by Freecall

Make FREE pc-to-pc and pc-to-phone calls over Internet and ISDN/PSTN and SIP network. PC-Telephone is a powerful communications software that enables you to exploit the full communications potential of the Internet and public telephone networks ISDN/

make pc-to-pc pc-to-phone calls over isdn-pstn sip network make pc-to-pc pc-to-phone calls over isdn pstn sip net

3CX VOIP Phone for Windows by 3CX Ltd

Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP/ VOIP provider/ phone service. Easy to use interface to transfer, forward calls or set-up conference calls. Free download from http://www.3cx.com

sip phone voip phone voip ip pbx voip phone system vonage sip sip phone pc phone works sip voip provider