Patent ID: 6388988
Filing Date: 2002-05-14
Classification: H04L

Abstract:
A method for automatic line protection switching between a primary embedded channel for carrying channel traffic from a transmit node to a receive node in normal operation and a secondary embedded channel for carrying the channel traffic from the transmit node to the receive node in the event of a fault condition on the primary embedded channel, comprising:in response to a fault condition in the primary embedded channel detected at the transmit node, automatically switching at the transmit node transmission of the channel traffic from the primary embedded channel to the secondary embedded channel; in response to the same fault condition in the primary embedded channel detected at the receive node, automatically switching at the receive node reception of the channel traffic from the primary embedded channel to the secondary embedded channel; and wherein the transmit node and the receive node independently switch between the primary embedded channel and the secondary embedded channel absent the communication of a channel fault message.