Abstract: A network gateway for time-critical and mission-critical networks is provided. The network gateway comprises a decision unit for determining, based on at least one network event; a processing unit for processing frames determined to be associated with the at least one service; a queue for buffering frames; and a traffic shaper for performing bandwidth management on frames stored in the queue.

Abstract: A multimedia communication system for enabling a variety of high quality video applications over an internet protocol (IP) network is disclosed. In accordance with one embodiment, a videoconference can be established between participants equipped with a television centric multimedia communication system, without any PC computers or expensive videophone services. The participants may view each other on a display means, such as a large television screen. In accordance with another embodiment, the system allows mobile subscribers to migrate mobile video calls from a cellular network to an IP network.