Abstract: A method for communicating in an enterprise network includes determining that a mobile device generating a communication request has an assigned enterprise voice number; and based in part on determining that the mobile device has an assigned enterprise voice number, establishing the requested communication over the enterprise network. A system for communicating over an enterprise network includes an enterprise voice number registry that maps enterprise voice numbers to mobile devices registered on the enterprise network, and an enterprise mobile switching center operable to query the enterprise voice number registry to determine if a mobile device is registered and further operable to determine that a communication requested by the mobile device should be established over the enterprise network based on the determination that the mobile device is registered. The enterprise network may be managed by the enterprise operator to satisfy enterprise network users.