Method and apparatus automatic call-back
US6035031A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/48
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An automatic call-back device notifies a subscriber when a called party's telephone station is no longer busy. When the subscriber calls a called party and the called party's telephone station is busy, the automatic call-back device offers the subscriber call-back options for calling the subscriber when the called party's telephone station is no longer busy. If selected, the automatic call-back device monitors the called party's telephone station for an on-hook signal, for example. When the called party goes on-hook, the automatic call-back device calls the called party and the subscriber and connects the subscriber and the called party in a call. If multiple subscribers call the same called party, the automatic call-back device stores an identifier corresponding to each subscriber in a call-back list based on when each subscriber called the called party. When the called party goes on-hook, the automatic call-back device contacts the first subscriber in the call-back list (i.e., the subscriber that called first). If this subscriber cannot be reached, then the automatic call-back device calls the next subscriber in the call-back list and so on until one of the calling subscribers is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.