Voice messaging system and method providing message delivery verification
US5991370A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jul 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/2083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A verifying non-user outcall unit within a voice messaging system attempts to deliver a subscriber's message to a non-subscriber. During the delivery attempt, the verifying non-user outcall unit directs the recording of a signal returned after dialing a recipient's telephone number. The verifying non-user outcall unit analyzes the signal returned, and determines whether the delivery attempt is successful. If the delivery attempt is unsuccessful, the verifying non-user outcall unit stores the recorded signal and a nondelivery notification in the originating subscriber's mailbox. If the delivery attempt is successful, the verifying non-user outcall unit stores a voice signal recorded after the recipient telephone is answered and a delivery notification in the originating subscriber's mailbox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.