CENTRAL AUTOMATIC MESSAGE ACCOUNTING SYSTEM

• US 3,829,617 A
• Filed: 09/01/1972
• Issued: 08/13/1974
• Est. Priority Date: 09/01/1972
• Status: Expired due to Term

• Current Assignee: AG Communication Systems Corp. (Nokia Corporation)
• Original Assignee: David K.K. Lee, George J. Caithamer, Ivan V. Coleman
• Inventors: Caithamer, George J., Coleman, Ivan V., Lee, David K. K.
• Primary Examiner(s): Claffy, Kathleen H.
• Assistant Examiner(s): Brigance, Gerald L.
• Application Number:
  US05/285,777
• Time in Patent Office: 711 Days
• Field of Search: 179/7.1TP,7.1R,7R,27FF
• US Class Current: 379/111
• CPC Class Codes: H04Q 3/54 in which the logic circuitry controlling the exchange is centralised

Abstract

Data on telephonic toll communications are recorded in an automatic toll recording office by means of computers and magnetic tape machines instead of by ticketing in the several originating exchanges. Service junctors are inserted into the path from the originating exchange to the toll switching exchange. These service junctors are monitored for calls, and upon the initiation of a call are connected to a data receiver. A memory area is allotted to the receiver and the initial data on an originating call is placed therein. A processor screens the data, controls the re-sending of the digits to the toll office and stores the information in a billing unit buffer memory. The service junctor is scanned for the duration of the call via a separate path and upon termination of the call another entry is made in the buffer memory. As the buffer memory reaches a predetermined amount of data it is periodically dumped onto the tape.

Claims

1. In a telephone system adapted for the automatic recording of items of information pertaining to toll connections, the combination of:

a plurality of service trunk circuits each having a first end permanently connected to a corresponding outgoing trunk circuit at a call originating office and a second end permanently connected to a corresponding incoming trunk circuit at a terminating office, means responsive to the receipt of a call by any one of said service trunk circuits over said first end for extending said call via said second end, said means including a branch of said service trunk circuit, a process control means, a digital data receiver, a sender means, a memory means, and marker means additionally responsive to the receipt of said call for connecting said call via said branch to said digital data receivers, marker buffer means operated after said marker means to connect said marker means to said memory means, a code processor means thereafter operated to place a class mark in said memory means and enable said digital data receiver to receive data via said service trunk circuit branch, said code processor operated upon completed receipt of said data via said digital data receiver to provide routing data to said process control means, a billing means operated to serially record all data received, said process control means operated in response to said code processor to enable said marker means to connect said service trunk circuit branch to said sender means and to simultaneously make an initial entry in said billing means, said sender means operated to complete the sending of the required digital routing digits, and trunk scanning means thereafter operatively connected to said trunk circuit and responsive to an on-hook condition at either end for transmitting an independent entry of said condition to said billing means.