Improvements in or relating to monitoring in an internet protocol (ip) domain

A method of facilitating monitoring of a multimedia call made up of a plurality of component parts, to enable the multimedia call contents to be identified at a predetermined location, the multimedia call originating from a location at which a first communications protocol operates and passing through at least one location where a second communications protocol operates to a destination, the method comprising the steps of: identifying the component parts of the multimedia call; removing one or more control signals from the component parts to form a call control signal for the multimedia call and a set of remaining component parts of the multimedia call; forming a multiplexed stream of the remaining component parts of the multimedia call; independently transmitting the call control signal and the multiplexed stream to the predetermined location to enable the component parts of the multimedia call to be determined in order to identify multimedia call contents.