METHOD FOR RELEASING REGISTRATION IN VIRTUAL TERMINAL COMMUNICATION SYSTEM

摘要

PURPOSE:To make a subscriber set up the active time simultaneously with the registration of the subscriber, to prevent a card as an input medium from being stolen and to release the registration effectively by providing the titled system with a means setting up active time length in a terminal receiving registration at the same time as the registration and a clock means. CONSTITUTION:The subscriber 1 inputs the subscriber's No. from a subscriber's No. input terminal 3 to a terminal equipment 13 through an input/output circuit 5 by an input medium 2, and simultaneously inputs the registration active time from a registration active time length input terminal 4. Subsequently, the medium 2 is returned to the subscriber and the circuit 5 forms information obtained by adding a terminal No. to the subsriber's No. and transfers the information to a home memory 14 on the exchange side. The circuit 5 sends the information of the active time length to a counter 7, which counts up clock pulses 6 and transfers the counted information to a controlling circuit 8. The controlling circuit 8 detects the reach of the active time length on the basis of the active time length and the counted information and sends reset information to the counter 7 to release the registration.