RESTRICTION OF CALLS TO SPECIFIC TELEPHONE NUMBERS IF A CHARGING LIMIT HAS BEEN REACHED

摘要

A network node (230) of a cost charging system (110) authorizes communication services provided to communication terminals (102) in a telecommunications system (100). The network node (230) receives a communication service request from a communications terminal (102). The network node (230) determines that a subscriber account associated with the communications terminal (102) has entered a limited service mode. The network node (102) responds to the receipt of the communication service request and to the determination by authorizing the requested communication service in a restricted direct access mode for the subscriber account based on the requested communication service being directed to a telephone number that is among at least one subscriber defined telephone number in the subscriber account. Related methods, home location registers, and systems are disclosed.