Message delivery system
US7266183B1 · kind B1 · utility
3Cited by
9References
7Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 2, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Dec 2, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2203/2027
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for a telephone dialing apparatus to deliver a message to a customer premise is described. The method includes the steps of: initiating a telephone call by dialing a telephone number; enabling the apparatus to receive an off-hook signal; enabling the apparatus to detect a first tone if the off hook signal is received; enabling the apparatus to detect a second tone if the first tone is detected; terminating the call if the second tone is detected and transmitting the message to the customer premise if the second tone is not detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.