Apparatus and method for connection control with media negotiation successful on different media formats

A method for connection control of a connection control apparatus configured for interconnecting a plurality of terminals, comprising the steps of:

• storing media format information usable on the terminals which are to be supplied with media information in media formats converted by a media format converter, and also storing format-specific information specifying parameters that are specific to the media format information, the media format information and the format-specific information being stored in a media format information storage;
• transmitting or receiving a connection control signal to or from the terminals by a communication circuit;
• using the connection control signal, received from one of a pair of the terminals that are to be connected, to reference the media format information storage by a media format information supplementing circuit;
• and
• supplementing the connection control signal, if said one of the pair of the terminals that are to be connected can use a particular one of the media formats but the other terminal of the pair cannot, with media format information identifying the particular one of the media formats and format-specific information specific to that media format information, and delivering a resulting connection control signal to the communication circuit.

A non-transitory computer-readable medium storing connection control program for controlling a computer, wherein the computer includes a storage for storing media format information identifying media formats that are usable on a plurality of terminals which are to be supplied with media information in media formats converted by a media format converter, said program controlling the computer to operate as:

• a communication circuit for transmitting or receiving a connection control signal to or from the terminals;
• and
• a media format information supplementing circuit operative in response to the connection control signal received from the terminals for referencing said storage to verify a presence of common media format information that may be used by the terminals which are being interconnected,
• wherein said media format information supplementing circuit supplements the connection control signal, if there is no common media format information, with predetermined media format information, and delivers a resulting connection control signal to said communication circuit, and
• wherein said media format information supplementing circuit supplements the connection control signal not only with the information indicating one of the media formats but also with the media format-specific information corresponding to said one of the media formats, the format-specific information specifying parameters that are specific to the said one of the media formats.