IP Phones - provide IP endpoints for voice communication., Gatekeeper - provides Call Admission Control (CAC), bandwidth control and management, and address translation., Gateway - provides translation between VoIP and non-VoIP networks., Call agent - provides call control for IP phones, CAC, bandwidth control and management, and address translation., Application servers - provide services such as voice mail & unified messaging., Control Unit - MCU provides real-time connectivity for participants in multiple locations to attend the same videoconference or meeting., Videoconference - provides access for end-user participation in videoconferencing.,

VoIP Network (7)

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