Method of sending and receiving call with specific request
US8433279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2008 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Oct 22, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/11
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A specific code indicative of a specific request is used to provide a communication device with an ability to send specific calls, such as emergency calls and silent calls, and the ability to distinguish the specific calls from the received calls. A method of sending a call includes generating a specific code indicative of a specific request, adding the specific code to a call, and then sending the call to a receiver for notifying the receiver of the specific request. A method of receiving a call includes determining whether a received call comprises a specific code indicative of a specific request, and generating an indication in response to the specific request when the received call is determined to comprise the specific code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.