Patent ID: 9184940
Filing Date: 2015-11-10
Classification: H04L,H04M,H04W

Abstract:
1. A method for processing a session request in an Internet protocol network, comprising: receiving, by a processor of a serving-call session control function, the session request from a calling party to a called party, wherein the called party uses a registered user endpoint device; querying, by the processor, a telephone numbering mapping server for the called party of the session request for a naming authority pointer resource record associated with the called party, wherein the naming authority pointer resource record comprises a session initiation protocol universal resource identifier and a telephone universal resource identifier; processing, by the processor, the session request using the session initiation protocol universal resource identifier, when the session initiation protocol universal resource identifier is returned in the naming authority pointer resource record associated with the called party that is received from the telephone numbering mapping server; determining, by the processor, whether the processing of the session request using the session initiation protocol universal resource identifier resulted in a successful call completion; and processing, by the processor, the session request using the telephone universal resource identifier, when the telephone universal resource identifier is returned and the processing of the session request using the session initiation protocol universal resource identifier resulted in an unsuccessful call completion.