Abstract: A method of coding data and a circuit for coding said data in a data package which is included in a data stream, the data package containing information on a source of origin and a destination for the data package, wherein the coding takes place in a coding system (3) containing a plurality of coding algorithms, where an identification system (2, 4) attaches information (7, 10) to the data package, the information being provided from said information on the source of origin of the data package and its destination, and the coding system (3) utilizes said attached information (7, 10) to select one of said plurality of coding algorithms, and the coding system (3) codes said data according to the selected coding algorithm. An object of the invention is to provide an effective utilization of processor resources during coding of data.