Apparatus for dialing of caller ID block code and receiving call waiting caller-ID-signal
US5796810A · kind A · utility
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/571
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for providing a convenient and flexible way for a user to dial a block code which allows the user to withhold his/her identity and telephone number when the user makes a phone call. By programming different operation modes using the keys when the apparatus is in an on-hook status, the user may elect to have a block code dialed by manually pressing a block key when desired, or to have a prompt message displayed on the screen to remind him/her to press a key to dial the block code, if so desired, when the phone is off-hook, or to have the block code auto-dialed every time the phone is off-hook. When the apparatus is in an automatic block code dialing mode, the user may override this setting and have his/her caller ID sent on a per call basis. Another aspect of the invention is a circuit arrangement which is capable of reducing the speech/voice interference to the call waiting caller-ID-alert signal during normal telephone conversation, thus improving the chance of a successful caller ID data transmission during call waiting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.