A method, system and computer-readable product for a fixed mobile convergence system. The method includes analyzing at least one rule set associated with at least one user profile with the user profile being associated with at least one mobile device supporting more than one line. Each line offering one or more transports and options for establishing a telephone call. After analyzing the one or more rule sets, a context-specific real-time usage mode is determined based on the analysis which include selections of a telephone line, a transport and establishment options. After determining the usage mode, a call is established between one of the devices and a telephony endpoint, either incoming or outgoing, based on the determined usage mode.