Patent ID: 6252875
Filing Date: 2001-06-26
Classification: H04L,H04Q

Abstract:
A multi-cast ABR service system for performing multi-cast ABR services between a sending terminal and a plurality of receiving terminals connected together, comprising:switching means for, upon receipt of a Forward RM cell sent from the sending terminal, broadcasting the Forward RM cell to the plurality of receiving terminals, and upon receipt of Backward RM cells returned from respective ones of the receiving terminals to the sending terminal, multiplexing and sending the Backward RM cells to the sending terminal, and turning back the Forward RM cell sent from the sending terminal so as to be returned to the sending terminal;rate storing means for storing receiving capable rates mounted on the Backward RM cells sent from said switching means; andRM cell converting means for converting the Forward RM cell returned from said switching means into a Backward RM cell destined for the sending terminal, and for sending the converted Backward RM cell with one of the receiving capable rates stored in said rate storing means mounted thereon to the sending terminal.