PC-Telephone 6.4 (Windows)

PC-Telephone allow to make pc-to-pc, pc-pc and cheap pc-to-phone, pc-phone, pc-to-fax, pc-fax, phone-to-pc, phone-pc, fax-to-pc, fax-pc, sip-phone, sip-to-phone calls over Internet or VoIP or ISDN or PSTN telephone networks. Use your computer as internet telephone, USB phone, USB handset, ISDN telephone, ISDN fax, and answer phone, fax software, voicemail, and caller ID, CLIP or CLIR, audio conferencing, and call answer, call transfer, call forwarding, call waiting, call accounting, and call recording, telephone exchange/PBX. Works with all Firewalls, NAT and LAN routers - nothing to configure.