Matches 251 - 271 out of 271 < 1 2 3 4 5 6


Match Document Document Title
3939309 Communication switching system data retrieval and loading arrangement  
A data retrieval and loading arrangement for a communication switching system, such as a telephone system, having common equipment with storage areas containing program information blocks for...
3870823 Telephone exchange metering system  
Disclosed is an automatic telephone metering system for use with private automatic branch exchanges (PABX) in connection with direct distance dialed (DDD), wide area telephone service (WATS), and...
3863216 Arrangement and method for assuring the vacidity of transferred data  
An arrangement and method for assuring the validity of data transferred between subsystems in, for example, common control communication switching systems. Data such as digits and commands are...
3829617 CENTRAL AUTOMATIC MESSAGE ACCOUNTING SYSTEM  
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...
3828135 ARRANGEMENT FOR ASSEMBLING AN INITIAL ENTRY IN A BILLING BUFFER  
In the described centralized automatic message accounting system, a multi-entry format formed of an intial entry, an answer entry and a disconnect entry is used to record call records. The data...
3816663 REAL-TIME MULTIPLEXED DIGITAL DATA RECORDING SYSTEM FOR TELEPHONE CENTRAL OFFICE AMA RECORDERS  
A real-time multiplexed digital data recording system for replacing one to ten AMA paper perforators of a telephone central office with a magnetic tape system. The system provides a deskewing...
3812293 ARRANGEMENT FOR PROVIDING PRIORITY OVERRIDE OF BILLING BUFFER ENTRY SELECTOR  
A permanent record of billing information is produced from trunk scanner entries and initial entries from a call processor, with the trunk scanner and the call processor being alternately provided...
3739097 TELEPHONE MESSAGE ACCOUNTING SYSTEM  
A telephone billing system in which a call identity indexer (CII) of the billing equipment of a central office is connected both to trunk circuits serving other offices possessing billing...
3688047 SWITCHING SYSTEM CHARGING ARRANGEMENT  
A switching system operable to establish a communication path comprising a video connection and an audio connection between stations is arranged with apparatus operable to detect the enabling of...
3673333 ACCOUNTING SYSTEM FOR TELEPHONIC EXCHANGES  
An automatic toll ticketing system provides means for transfering charge information from registers, incoming links and a rate of charge indicator, to a programmed data-processing machine. In case...
3551599 AUTOMATIC MESSAGE ACCOUNTING SYSTEM TO INSURE THAT TRUNKS DESIRING TO BE IDENTIFIED FOR TIMING PURPOSES WILL NOT BE DEPRIVED OF ACCESS TO THE IDENTIFIER BY TRUNKS DESIRING TO HAVE AN INITIAL ENTRY RECORDED  
3510594 ARRANGEMENT FOR AUTOMATIC ASSESSMENT OF FEES IN CONFERENCE CALL CIRCUITS  
3559172 INFORMATION PRESENTATION CIRCUIT  
3433898 TELEPHONE PULSE METERING SYSTEM  
3427594 SYSTEM FOR THE TRANSMISSION AND REGISTRATION OF TELEPHONE CHARGES  
3250858 Subscriber line divided access circuit  
3227807 Multi-zone metering  
3205309 Toll ticketing computer  
3075046 Telephone traffic data recorder  
2911150 Telephone call charge and tax calculator  
2844307 Record-controlled apparatus  

Matches 251 - 271 out of 271 < 1 2 3 4 5 6