Telephone apparatus with calling line identification
US5553125A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Jul 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable cellular telephone capable of recognizing a Calling Line Identification (CLI) signal. The telephone comprises a memory in which can be stored telephone numbers together with an associated operating instruction. For example the instruction may be for the telephone to respond with a "BUSY LINE" signal. When a call is received which includes a CLI signal the memory is searched to find a number corresponding to the CLI. If a match is found the normal operating sequence is interrupted to carry out the associated instruction. Hence the telephone can respond with a "BUSY LINE" signal for calls originating from selected telephone numbers, providing a call screening facility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.