Patent ID: 8908506
Filing Date: 2014-12-09
Classification: H04L

Abstract:
1. A method for switching an automatic protection switching (APS) service channel, comprising: reaching, by a processor of a first recovered node in a telecommunication network, a wait-to-restore (WTR) state upon receiving information about transition to the WTR state from a second recovered node if a current state of the first recovered node is a first No Request (NR) state and if a state prior to transition to the first NR state is an Signal Fail (SF) state, wherein the first NR state is a No Request state of selecting a protection channel, and the SF state is a Signal Fail state of selecting a protection channel; and reaching, by the processor of the first recovered node upon expiry of a WTR time of the first recovered node, a second NR state after receiving WTR time expiry information sent by the second recovered node, wherein the second NR state is a No Request state of selecting a working channel.