Systems and methods are described that facilitate the provision of dual mode services. Access to the dual mode services is controlled by associating a mobile device to an access point. Subscribers are required to provide valid geographical addresses for access points associated with the mobile devices prior to provision of service. Consequently, physical addresses are necessarily available for emergency services (e.g., E911). Mobile devices are restricted to specific access points based upon the access point identifiers automatically provided during initialization of service and maintained for authorization purposes.