Browse Prior Art Database

Audio Identification of as Calling Subscriber's Number in a Telephone Switching System

IP.com Disclosure Number: IPCOM000094263D
Original Publication Date: 1966-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Cozza, LM: AUTHOR [+2]

Abstract

On command, the system automatically and repetitively calls the number of a subscriber whose line is busy or who fails to answer an attempt to complete a call in a manner that releases the calling phone for interim usage. The system stores the calling and called numbers. When the automatic call is answered, the system provides an audio response to the called subscriber indicating the identity of the number from which the call is originally attempted.

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Audio Identification of as Calling Subscriber's Number in a Telephone Switching System

On command, the system automatically and repetitively calls the number of a subscriber whose line is busy or who fails to answer an attempt to complete a call in a manner that releases the calling phone for interim usage. The system stores the calling and called numbers. When the automatic call is answered, the system provides an audio response to the called subscriber indicating the identity of the number from which the call is originally attempted.

A subscriber at instrument 10 who fails to complete a call because of the called instrument being busy, the called subscriber failing to answer, or the like, can notify the system through switching network 14 that the service of automatic calling is desired. System control 16 responds to the request by storing the calling number at one location 11 and the called number in another location 12 which is in association with 11. Timer 18 notifies control 16 after a period of time such as five minutes elapses. Control 16 then reviews the message storage including 11 and 12 and, through network control 20 and the network 14, determines if one of the called numbers is free. If one of the stored called numbers is free, a ringing connection is established for a brief period. If no answer occurs, the attempt is abandoned and is tried again at the next timer 18 notification.

If the subscriber answers, however, control 16 identifies the calling...