Patent ID: 8213936
Filing Date: 2012-07-03
Classification: H04W

Abstract:
1. An apparatus for providing a handoff in a network environment, comprising: a mobile station configured to: detect signal degradation in an enterprise network; in response to detecting the signal degradation in the enterprise network, autonomously invoke a first generic call transfer function comprising a blind call transfer function configured on the mobile station to handoff the mobile station from the enterprise network to a cellular network independently of a mobility application of the enterprise network, the blind call transfer function configured to transfer a first call from a transferor user in the enterprise network to a transferee user in the cellular network; detect signal degradation in the cellular network; in response to detecting the signal degradation in the cellular network, autonomously invoke a second generic call transfer function comprising an explicated call transfer function configured on the mobile station to handoff the mobile station from the cellular network to the enterprise network independently of the mobility application of the enterprise network, the explicated transfer function configured to transfer a second call from a transferor user in the cellular network to a transferee user in the enterprise network; configure the first and second generic call transfer functions to hand off the mobile station by designating the mobile station as both the transferor user and the transferee user; communicate a first and second call ID to a mobility application to uniquely distinguish the second call from the first call; and leverage the first and second generic call transfer functions to execute the handoff for the mobile station, wherein the mobile station is operable to recognize that the transferred call is an inter-network roaming call and answer the call automatically.