Telephone station set with improved flash signalling
US4313037A · kind A · utility
3Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1980 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Jun 2, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/53
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved telephone station set for use with a switching system which senses flashing is disclosed. A separate flash key is included on the set. Depression of the flash key causes decoupling of the set for a predetermined time which corresponds to the flash window. Depression of the hook switch, assures decoupling of the set for a sufficiently long period of time so that a hang-up is detected even if the hook switch is immediately released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.