Abstract: A business or enterprise (70) may purchase a block of telecommunication network features from a network administrator (60). A user (10) may be a mobile user or various other kinds of users connectable by wireline or wireless networks. The user has an association with the business or enterprise. The user may be an employee of the business or a purchaser of services from the enterprise. The features are implemented for use by the user through various call or session agents (50, 80). After a feature is utilized, the business or enterprise checks whether a particular feature has been exhausted (212). If the feature has been exhausted, another block of features is obtained from the network administrator.