Patent ID: 9210703
Filing Date: 2015-12-08
Classification: H04L,H04M,H04W,Y02D

Abstract:
1. A method, comprising: allocating, by a femtocell system, a session initiation protocol client for a user equipment; and transmitting, by the femtocell system, a first registration message for the client, wherein the first registration message includes a first contact comprising a session initiation protocol uniform resource identifier assigned to the user equipment, wherein the first registration message includes a second contact comprising a telephone uniform resource identifier; wherein the telephone uniform resource identifier comprises a telephone number assigned to the user equipment, and wherein the order of the first contact and the second contact specifies a preferred contact order for the use equipment; comprising transmitting, by the femtocell system, a second registration message for the client to a registrar service, wherein the second registration message includes a first contact comprising a telephone uniform resource identifier comprising a telephone number assigned to the user equipment, and wherein telecommunication services are provided to the user equipment by a macrocellular system subsequent to transmission of the second registration message.