DEVICE CONTAINING A PLURALITY OF FUNCTIONAL ELEMENTS COMMUNICATING WITH EACH OTHER VIA ATM CELL

摘要

PROBLEM TO BE SOLVED: To allow the constant replacement and easy updating of various types of component elements of a product and also to easily integrate the telecommunication functions by controlling a switching means so as to designate the route of a frame to a proper output port. SOLUTION: A route designation header to be carried is composed of (n) bits and the specific value of the header varies when a frame is continuously carried from a block to the next one. The route designation bits are calculated by the ATM receiver logical blocks 1 to 4 and used later for permutation of the present value of the route designation header. The frame including the route designation header is carried to the next block after a switch 200 is once turned on. Then the route designation header is used to carry other value that can be useful to the next block that is allocated to a local signaling function and a control function, for example.