Innomedia Pte Ltd.

Charles Xu

Paul Pay-Lun Ju

Chen-Huei Chang

Shih-An Cheng

Fu-Hua Liu

Hu-Hua Liu

A directory server provides a media session channel for communication of real time streaming media data from a remote client to a client served by an address translation firewall. The directory server includes a client registration module for receiving a registration datagram originated by the client, source network address and a source port number from the registration datagram, and providing a session signaling message from the remote client to the client utilizing the extracted source network address and source port number.

System and method for establishing channels for a real time streaming media communication system

A device provides for sending datagrams representing real time streaming media frames to a client independent of whether the client is served by a network address proxy. The device receives a datagram originated by the client that includes an indicated network address and an indicated port number for receipt of the datagrams representing real time streaming media frames, extracts a source network address and a source port number from the datagram originated by the client, and compares the indicated network address to the source network address. The device addresses the datagrams representing real time streaming media frames to the source network address and source port number if the indicated network address and the source network address are not the same.

Real time streaming media communication system

A method for communicating real time media data between a first client and a second client across a packet switched data network is provided. The method includes receiving an indication of a first client network address for use as a destination network address for sending media datagrams to the first client. A media datagram originated by the first client is also received. A comparison between the first client network address and a source network address extracted from the media datagram originated by the first client is made. A media datagram is sent to the first client using the source network address if the source network address and the first client network receiving address are not the same and the media datagram is sent to the first client using the first client network address if the source network address and the first client network address are the same.

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Santa Clara, CA, United States of America

Charles Xu