T-mobile Usa, Inc.

Robert Ara Kondakjian

Nassereddine Sabeur

Chris Jensen

A Karl Corona

Vasu Krishnasami

A subscriber information entity of a home wireless carrier network may receive an authentication request for a user device from a network element of a partner wireless carrier network. The authentication request may include a network element identifier of the network element. An authentication response for the authentication request is then sent to the network element of the partner wireless carrier network. Further, the network element identifier of the network element is stored in a subscriber profile for the user device. A registration request for the user device is then received from a particular network element of a wireless carrier network, in which the registration request includes a corresponding network element identifier of the particular network element. A registration response to the particular network element of the wireless carrier network may be sent when the corresponding network element identifier matches the network element identifier.

Device authentication verification for device registration

A routing device of a telecommunications network can receive an initiation request of a communication session. The initiation request can include a destination identifier associated with a terminal. The routing device can query a responder for terminal-associated serving-network information. The routing device can then forward the initiation request to a serving network identified by the serving-network information. In some examples, the responder can query a registry for network-attachment information indicating a current media path associated with the terminal. The responder can provide the serving-network information based at least in part on the network-attachment information. In some examples, the destination identifier can include a global name, and the serving-network information can include an associated local name In some examples, the routing device can include an S-CSCF or ISBC, the responder can include an ENUM server, or the registry can include an HSS.

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Snohomish, WA, United States of America

Robert Ara Kondakjian