Communication charge manageable digital communication unit...

Details Communication charge manageable digital communication unit... Communication charge manageable digital communication unit...

H - Electricity

04

L

340/81

H04L 5/14 (2006.01) H04M 15/38 (2006.01)

Patent

CA 2020574

A communication charge management unit of a communication unit in the Integrated Services Digital Network comprises a memory (11; 21; 41) for storing the communication charge for each of plurality of identification information. The identification information is one of or a combination of user identification information specifying the user of the communication unit, a sub address specifying each of the plurality of terminal units which the communication unit includes, and communication mode identification information specifying each of the plurality of communication modes of the communication unit. The management unit comprises a control accumulating unit (7; 27; 43) updating the corresponding communication charge stored in the memory, in response to the identification information generated at the time of calling by the communication unit and the communication charge information transmitted from a center at the time of communication termination. This control accumulating unit updates the memory contents by adding the current transmitted communication charge to the communication charge stored in the memory.

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