The Wiki of Unify contains information on clients and devices, communications systems and unified communications. - Unify GmbH & Co. KG is a Trademark Licensee of Siemens AG.
VoIP = Voice over IP.
VoIP is a often used term for the technology that use the Internet Protocol to exhange voice and other communication services. So far this services have been carried over the public switched telephone network (PSTN).