Patent ID: 6888808

Claim:
An apparatus for delivering one or more features in a network environment, comprising: a mobile station operable to conduct a communication session that involves a communication device, wherein the mobile station is operable to roam between a private and a public network and use multiple access technologies to facilitate the communication session, an Internet protocol (IP) private branch exchange (PBX) being operable to receive a request from a selected one of the communication device and the mobile station to establish the communication session, the IP PBX responding to the request by signaling to the mobile station via a cellular data network that a call is being initiated that involves the mobile station, the IP PBX being operable to exchange signaling information with a voice gateway after receiving the request such that one or more voice circuits are established by the voice gateway in order to accommodate voice data that may propagate between the communication device and the mobile station, and wherein a signaling pathway is established between the IP PBX and the mobile station via the cellular data network in response to the request, the establishment of the signaling pathway being substantially concurrent with the establishment of one or more of the voice circuits such that one or more features associated with the private network are delivered to the mobile station during the communication session, the features associated with the private network being delivered to the mobile station when it is operating in either of the public and private networks.