US 2013/0097330 A1Published application

Failover communication services

AssigneeAT&T Intellectual Property I, L.P.

InventorsCHAOXIN QIU, Robert F. Dailey, Jeffrey L. Scruggs

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Abstract

A system that incorporates teachings of the subject disclosure may include, for example, a home subscriber server having a memory coupled to a processor. The processor can be configured to store a first identity of a first communication device registered with a primary communication resource and a secondary communication resource, receive a request associated with a registration request initiated by a second communication device, detect that a second identity of the second communication device matches the first identity of the first communication device, and direct a registration of the second communication device with at least one of the primary communication resource or the secondary communication resource responsive to the detected match. Other embodiments are disclosed.

Claims20

Dependent claims

A computer-readable storage medium, comprising computer instructions, which when executed by at least one processor causes the at least one processor to:

transmit a first Session Initiation Protocol (SIP) registration message to an Internet Protocol Multimedia Subsystem (IMS) network;
receive a first acknowledgment from the IMS network indicating that the communication device has registered with a primary communication resource in the IMS network;
transmit a second SIP registration message to the IMS network, wherein the second SIP registration message comprises an indicator for registering the communication device with a secondary communication resource in the IMS network;
receive a second acknowledgment from the IMS network indicating that the communication device has registered with the secondary communication resource;
transmit a first SIP origination message to the primary communication resource of the IMS network to establish a communication session with a second communication device;
detect that the primary communication resource of the IMS network is unavailable to establish the communication session;
and
transmit a second SIP origination message to the secondary communication resource to establish the communication session with the second communication device.

5 more elements

An Interrogating Serving Call Session Control Function (I-CSCF) device, comprising a memory coupled to a processor, wherein the processor is configured to:

receive a first registration request initiated by a first communication device;
transmit a request to a Home Subscriber Server (HSS) device responsive to receiving the first registration request;
receive from the HSS a first message comprising a first identity of a primary communication resource, wherein the HSS device transmits the first message responsive to detecting that a first identity of the first communication device matches a second identity of a second communication device, and wherein the second communication device is registered with the primary communication resource;
and
register the first communication device with the primary communication resource.

2 more elements

Dependencies are inferred from the claim text.