Patent ID: 8045955

Claim:
A method, comprising: initiating, in a processor, an identifier selection procedure; identifying, by the processor, whether a user has a dedicated emergency telephone uniform resource identifier, and, when the user has the dedicated emergency telephone uniform resource identifier, selecting the dedicated emergency telephone uniform resource identifier; identifying, by the processor, when the user does not have the dedicated emergency telephone uniform resource identifier, whether the user's internet protocol multimedia private identity is known; identifying, by the processor, when the user's internet protocol multimedia private identity is known, whether the user's internet protocol multimedia private identity has a non-shared telephone uniform resource identifier, and selecting the non-shared telephone uniform resource identifier when the user's internet protocol multimedia private identity has the non-shared telephone uniform resource identifier, otherwise selecting a telephone uniform resource identifier of the user's internet protocol multimedia private identity; and identifying, by the processor, when the user's internet protocol multimedia private identity is not known, whether a shared telephone uniform resource identifier is available, and selecting the shared telephone uniform resource identifier when the shared telephone uniform resource identifier is available, otherwise selecting a telephone uniform resource identifier from a non-shared set.