Clustering call servers to provide protection against call server failure
First Claim
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1. A method for providing call server failure protection, the method comprising:
- assigning a set of media gateways to each of at least three call servers, each call server having primary control of the corresponding assigned set of media gateways;
designating a second call server as having secondary control of a first media gateway from the set of media gateways assigned to a first of the call servers;
designating a third call server as having secondary control of a second media gateway from the set of media gateways assigned to the first call server; and
activating secondary control in response to a failure of the first call server.
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Abstract
Systems and techniques for providing call server failure protection involve assigning a set of media gateways to each of three or more call servers. Each call server has primary control of the corresponding assigned set of media gateways. A second call server is designated as having secondary control of a first media gateway assigned to a first of the call servers. A third call server is designated as having secondary control of a second media gateway assigned to the first call server. Secondary control is activated in response to a failure of the first call server.
18 Citations
20 Claims
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1. A method for providing call server failure protection, the method comprising:
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assigning a set of media gateways to each of at least three call servers, each call server having primary control of the corresponding assigned set of media gateways;
designating a second call server as having secondary control of a first media gateway from the set of media gateways assigned to a first of the call servers;
designating a third call server as having secondary control of a second media gateway from the set of media gateways assigned to the first call server; and
activating secondary control in response to a failure of the first call server. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for providing call server failure protection in a communications network, the system comprising:
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at least three call servers, each call server having primary control of a corresponding set of media gateways; and
wherein, upon failure of one of the at least three call servers, control of the media gateways in the corresponding set of media gateways is divided among at least two other call servers of the at least three call servers. - View Dependent Claims (9, 10, 11, 12)
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13. An article comprising a machine-readable medium storing instructions for causing data processing apparatus to:
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associate sets of media gateways with at least three call servers, each call server having primary control of a unique set of media gateways including a first call server having primary control of a first set of media gateways, the first set of media gateways including a first media gateway and a second media gateway;
associate secondary control of the first media gateway with a second one of the call servers;
activate secondary control of the first media gateway in response to deactivation of primary control of the first media gateway;
associate secondary control of the second media gateway with a third one of the call servers; and
activate secondary control of the second media gateway in response to deactivation of primary control of the second media gateway. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification