Patent ID: 8675473
Filing Date: 2014-03-18
Classification: H04L,H04M,H04W

Abstract:
1. A method, comprising: determining, at a first network node, unavailability of a second network node for an emergency service routing number (ESRN) related to an emergency communication; querying, at the first network node, a database for administrative data associated with the ESRN, in response to the second network node being unavailable for the ESRN; generating a first identifier associated with the administrative data, in response to the second network node being unavailable for the ESRN; updating, at the first network node, the first identifier associated with the administrative data with data indicative of a user device originating the emergency communication, wherein the data indicative of the user device originating the emergency communication comprises a second identifier of the user device; and delivering, by the first network node, the updated first identifier in a session initiation protocol message to the second network node.