PC-Telephone is a powerful communication software application that lets you exploit the full communication potential of the Internet, Integrated Services Digital Network (ISDN) and Public Switched Telephone Network (PSTN). PC-Telephone makes possible to use your computer as a telephone, fax machine, voice mail and data transfer system. The Computer Telephony Integration technology implemented in PC-Telephone increases your productivity, saves your time and money and creates many positives for companies and private individuals alike.