Patent ID: 6349323
Filing Date: 2002-02-19
Classification: H04L,H04Q

Abstract:
An ATM (Asynchronous Transfer Mode) communication system, wherein an ATM cell which is transmitted by a first station is received by a second station, even when the proper VPI (Virtual Path Identifier) and VCI(Virtual Channel Identifier) have not yet been assigned to said second station, said communication system comprising:a first station for transmitting an ATM cell; and a plurality of second stations connected with said first station for receiving said ATM cell, each of said plurality of second stations comprising: a comparison means for comparing the VPI and VCI which are written in said ATM cell with a proper VPI and VCI for each of said second stations; a signal processing means for receiving said ATM cell, when the VPI and VCI which are transmitted by said first station are identical with said proper VPI and VCI; and a mask set up means, responsive to a link establishment signal in said ATM cell, for invalidating the comparison result in said comparison means, such that any VPI and VCI transmitted by said first station are deemed to be identical with said proper VPI and VCI.