This Recommendation describes requirements for the use of fixed networks in the role of fixed access networks for IMT-2000 networks. This convergence of fixed networks and IMT-2000 networks enables mobile users to roam outside the serving area of their IMT-2000 network and still have access to the same set of services outside their IMT-2000 network boundaries as they do within those boundaries. This Recommendation also describes the framework for fixed mobile convergence and the capability requirements for enhanced fixed terminals that may be utilized to enhance the roaming IMT-2000 user's experience. This Recommendation also details the mobility management functional requirements in fixed networks in support of roaming IMT-2000 subscribers.