Patent ID: 6314098
Filing Date: 2001-11-06
Classification: H04L,H04Q

Abstract:
An ATM connectionless communication system for delivering connectionless datagram in a form of sessions through an ATM network, comprising:edge units, each connected to a user network where quality-of-service (QoS) sessions and No-QoS sessions are mixed, for accommodating an IPv4 packet from said user network into an intermediate frame and accommodating said intermediate frame into ATM cells; andcore units for transmitting said sessions through said ATM network,said edge units and said core units being connected by permanent virtual paths to form a connectionless network,each of said edge units having a session supervising means for determining whether said IPv4 packet is a QoS session or a No-QoS session, and means for allocating a control flow number to said IPv4 packet when said IPv4 packet is a QoS session.