JPS5547763A - Electronic call meter unit - Google Patents

Abstract

PURPOSE:To obtain detailed charging information, by receiving the called party number from the common circuit of the common control system exchanger and the call rate information on the line C of the subscriber line. CONSTITUTION:When the telephone set 1 at the calling side makes a call, this state change information is received with the call rate information reception circuit 5 in directly interface with the C line of the subscriber line. This information is fed to the common control circuit 7 to pick up the caller number and to count the registerated call rate under communication. The called number corresponding to the called party side telephone set 4 is received with the called party number pick up circuit 6 in interface with the common circuit of the common control type exchanger 2 and this number is fed to the common control circuit 7, allowing to know the called party number. Thus, the charging information identified can be stored in the memory circuit 8.