A system and associated processes to provide interactive public branch exchange (PBX) processes. The PBX processes including: session initiation protocol (SIP) processes, application processes, and an interface with signaling process. The media processes cause the machine to: perform an audio/video play...http://www.google.de/patents/US7751378?utm_source=gb-gplus-sharePatent US7751378 - Method, apparatus and system for client-based distributed PBX for enterprise telephony
