Method for introducing switched virtual connection call redundancy in asynchronous transfer mode networks
AssigneeCisco Technology, Inc.
InventorsHenry L. Fourie, Chun-Hung Lau
Life of this patent
Estimating the term…
Abstract
A method for sharing a call record between a first controller and a second controller is disclosed. The method comprises the step generating the call record in the first controller. For one embodiment, the call record comprises call parameters operable to establish a call connection between the first controller and a remote controller. The method also comprises the step of transferring the call record to the second controller. For one embodiment, the second controller performs as a stand-by controller and is able to take over the operations of the first controller in the event of failure of the first controller.
Claims29
A method for sharing a call record between a first controller and a second controller, the method comprising:
- generating the call record in the first controller, wherein the call record comprises call parameters operable to establish a call connection between one of the first controller or the second controller and a remote controller, the remote controller residing in a different node than the first and second controllers;
- and
- transferring the call record to the second controller.
A method for reducing call termination in a network having a plurality of nodes, the method comprising:
- generating a plurality of call records in a first controller of a first node of the plurality of nodes, wherein the call record comprises a set of call parameters of a plurality of active calls, wherein the set of call parameters comprises a plurality of call reference numbers, each call reference number of the plurality of call reference numbers corresponding to an active call of the plurality of active calls;
- and
- transferring the plurality of call records to a second controller in the first node, wherein the second controller is operable to maintain the plurality of active calls.
A method of call management, comprising:
- handling an active call by a first node using an active controller and a first switch;
- switching to a standby controller of the first node in response to a failure of the active while maintaining the active call;
- and
- synchronizing the standby controller of the first node to a second switch in an adjacent node subsequent to the switching, wherein each of the first node and the adjacent node have their own active controller and standby controller.
A machine readable medium having stored thereon instructions which when executed by a processor cause the processor to perform the following:
- generating a call record in a first controller, wherein the call record comprises call parameters operable to establish a call connection between one of the first controller or a second controller and a remote controller, the remote controller residing in a different node than the first and second controllers;
- and
- transferring the call record to the second controller.
A network node, comprising
- means for generating a call record in a first controller, wherein the call record comprises call parameters operable to establish a call connection between one of the first controller or a second controller and a remote controller, the remote controller residing in a different node than the first and second controllers;
- and
- means for transferring the call record to the second controller.
Dependencies are inferred from the claim text.