Telephone message storage system with out-of-band signalling
US5263080A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1990 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Jun 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/533
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A pay telephone message system is disclosed that includes a voice message system storing and forwarding to a destination telephone a voice message left by a user. Call information including the destination telephone number is routed out-of-band, that is, in a data or service request channel separate from the voice channel, over a packet concentrator network separate from the voice telephone network. During operation a message telephone call is placed to the voice message system over the existing telephone network. The call information is routed over the concentrator network as a voice message service request. The voice message system returns a token, a call identifier or service request number, corresponding to the service request to the pay telephone interface making the request and handling the pay telephone call. The interface sends the token in-band over the telephone network to the voice message system prior to allowing the pay telephone user to store a message. The token allows the voice message system to correlate the incoming voice message with the call information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.