Abstract: A signaling router which receives messages coming from terminals or from other signaling routers, correlates a new message with a previously received message, and forwards the new message to a signaling router associated with the previously received message is presented.

Abstract: The invention relates to a method of selecting multimedia data coding formats in a communications system having at least two terminals suitable for exchanging multimedia data. Each terminal has a set of coding formats listing the formats which it is capable of processing in reception and formats which it is capable of applying to multimedia data in transmission. Prior to any exchange of data between two terminals, each terminal sends its set of coding formats to the other terminal via a server. According to the invention, the server is connected to code format conversion means and, where necessary, it enlarges each set of coding formats received from a terminal as a function of the conversion means available to it, prior to forwarding the possibly enlarged set to the other terminal. In this way, the coding and decoding abilities of terminals in the system are enriched virtually, thereby reducing the number of calls that fail.

Abstract: A signaling router has means for receiving messages coming from terminals or from other signaling routers, and it further comprises means for correlating a new message with a previously received message, and for forwarding said new message to a signaling router associated with said previously received message.