Patent ID: 6822963
Filing Date: 2004-11-23
Classification: H04L,H04Q

Abstract:
An ATM transmission system, adapted for transmission of IP data, having at least first and second end-user terminals and a plurality of routers, said ATM transmission system including at least two LISs and adapted to handle both intra-LIS and inter-LIS traffic, comprising:for establishing a first communication path for short lived transmissions, between first and second end-user terminals, on a hop-by-hop basis; signaling means for exchanging call connection messages between said first and second end-user terminals over said first communication path; and second connection means for establishing a second, direct, communication path, by-passing said plurality of routers between said first and second end-user terminals, wherein long lived data transmissions are transmitted over said second communication path; said first communication path is a pre-established default path; first end-user terminal is a call initiating terminal, said first end-user terminal includes signaling means for transmitting a control message to said second end-user terminal over said default path, said control message comprising, inter alia, an ATM address for said first terminal and QoS parameters for said first terminal; said second end-user terminal has check means for checking, on receipt of said control message from said first terminal, that said second end-user terminal has sufficient available resources to handle a transmission from said first terminal, and said second connection means establishes said second communication path, if said second terminal has sufficient available resources.