The present invention is related to a communication system in which a transmitter
transmits cyclically a plurality of mutually related objects to a terminal. If
said objects are used in the terminal there is no mechanism to establish whether
said objects are consistent, e.g. that they are originated at the same time. To
ensure that the objects are consistent, they are combined in a common transport
entity. The receiver is arranged to extract only the complete set of mutually related
objects from the common transport entity. Consequently, the consistency is always ensured.