[ClosedTalk] is a secure VoIP solution for internet talk in total privacy. [ClosedTalk] provides user privacy, the confidence in the Identity of your talk partner and all other benefits of a VoIP solution. All data to establish a connection and the actual voice data are transmitted in an encrypted format. Unlike other VoIP solutions, [ClosedTalk] protect the communication through strong encryption technology, direct key exchange between the partners, and optional trustful authentication by digital certificates. Features include secure registration and activation, call connection using E-Mail-Adresse address instead of telephone numbers, text chat, address book, call history, and ringtone management. By using the built-in sound system of the computer, [ClosedTalk] users communicate without the need of IP telephones. The solution incorporates top-end Sicherheit technologies, such as ECC based Diffie-Hellman Key Generation Protocol to provide secure session keys, Elliptic-Curve cryptography, and a strong 256 Bit Advanced Encryption Standard to secure the voice and the management data. Making internet talk using [ClosedTalk] is easy as the caller only need the recipient’s E-Mail-Adresse address. [ClosedTalk] does not need the old-fashioned telephone numbers. A gatekeeper service is provided by CE-Infosys to locate the public IP addresses of the communication partners on the Internet. Compared to a telephone communication, [ClosedTalk] provides highest sound quality as you need it to identify the voice of a partner or to listen to music. [ClosedTalk] is free for professional Wirtschaft and Startseite uses. [ClosedTalk] users can enhance their communication Produktivität further by opting for a total solution which includes easy-to-use handsets, private gatekeeper for Wirtschaft users, and hotline support for a large user base. Free online support is provided at http://groups.yahoo.com/group/closedtalk_ceinfosys. More software updates and promotions are available at www.ce-infosys.com