Patent ID: 9467308
Filing Date: 2016-10-11
CPC Classification: H04L

Claim Text:
1. A border element for a voice over Internet protocol network, the border element comprising: a catastrophe detector to determine whether a catastrophe has been detected in the voice over Internet protocol network, the catastrophe identified when a threshold number of re-registration attempts via a session initiation protocol and corresponding re-registration failure events occur in the voice over Internet protocol network within a time interval; a backoff time module to compute a backoff time using a registration rate capability value of a border element; a recovery module to, in response to receiving a voice over Internet protocol network registration request message from a voice over Internet protocol endpoint, determine whether the voice over Internet protocol endpoint is currently registered with the voice over Internet protocol network, and to send a response message having a header representing the backoff time to the voice over Interent protocol endpoint when the voice over Internet protocol endpoint is not currently registered with the voice over Internet protocol network; and a signaling processor to process the voice over Internet protocol network registration request message when the voice over Internet protocol endpoint is currently registered with the voice over Internet protocol network.