Method for managing variations in a data flow rate

Abstract

The present invention discloses a method of detecting overproduction of data when an H.323 endpoint is transmitting more video or other data than initially negotiated, and makes it produce less by utilizing standard flow control procedures. Flow control messages are sent periodically, incrementally instructing the H.323 endpoint to transmit lower amounts of bit rates, until the video rate received from the endpoint is equal to or lower than the initially negotiated rate, or some other fixed rate.

Description

Technical field

[0001] The present invention relates to flow control in a video conference system. Background technique

[0002] Video conferencing systems are traditionally adapted to the use of circuit-switched and packet-switched networks. As a result, efforts have been made to achieve interoperability between circuit-switched and packet-switched terminals, which provides interaction and communication without loss of quality or introduction of delay. The public standard for multimedia communication on circuit-switched networks such as ISDN is the H.320 standard from the International Telecommunication Union (ITU). The corresponding standard for packet switching is H.323. Since the present invention relates to flow control, which is a problem related to packet switching, H.323 is described in detail below.

[0003] As mentioned above, H.323 is a comprehensive recommendation from the International Telecommunication Union (ITU) that sets standards for multimedia communications on...

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