Patent ID: 9137839
Filing Date: 2015-09-15
Classification: H04L,H04W

Abstract:
1. A method, comprising: monitoring, by a system comprising a processor, a communication directed to a user device via a first network device of a set of first network devices of a first network, wherein the user device is coupled to a second network device of a set of second network devices of a second network; enabling, by the system, call control of the communication to occur at the first network device; and performing, by the system, a domain selection function based on a network registration condition of the user device and whether a call control relationship between the first network device and the second network device is determined to exist, wherein the call control relationship is determined to exist between the first network device and the second network device in response to a determination that control information has been communicated between the first network device and the second network device; disabling, by the system, the call control at the first network device based on a result of the performing the domain selection function in response to an internet protocol multimedia subsystem call control being determined not to be available at the first network device and a determination that the first network device and the second network device do not have the control relationship; sending, by the system, a query to a data store for information related to the second network device to which the user device is connected, wherein the query comprises an inquiry regarding whether the second network is an authorized roaming partner to the first network; and receiving, by the system, service domain information and access domain information in response to the query; wherein the first network is a home network and the second network is a visited network.