Programmable key telephone system
US4570035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | May 31, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/914
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A programmable key telephone system has a key service unit with a plurality of telephones coupled thereto. The key service unit is controlled by a microcomputer. An alphanumeric display mounted in the key service unit is coupled to the microcomputer and is driven during an installation mode of operation to prompt an installer through a sequence of steps designed to elicit instructions for programming system features. A telephone from the key telephone system is coupled by the installer to the microcomputer and used as a data input terminal to enable the installer to input instructions via the telephone's keys. Non-volatile memory is coupled to the microcomputer for storing system feature data in accordance with instructions entered by the installer. Indicator lamps on the data entry telephone can provide additional prompting or feedback to the installer as to features being programmed. Programming of the system can be accomplished without interrupting normal telephone operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.