Two line voice/data switch
US6195423A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/654
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-line telephone switch device wherein relays added to a routing switch automatically route incoming calls on a plurality of lines to predetermined devices based upon the distinctive rings or tones present on the lines. A number of relays can be added to the routing switch. A line select relay connects the routing switch device to a specific incoming line. A bypass relay allows the device to connect a line directly to an extension by bypassing the routing switch. An invert relay enables the invention to reverse the designation and the routing priority of the incoming telephone lines. Ring detectors detect incoming rings and output a signal to a processor which then directs the switch configurations. Additionally, the system enables a single line telephone answering device to answer and record messages from a multitude of incoming lines. The multi-line telephone switch can uniquely route calls based upon the distinctive ring cadence on each of the lines. In addition, a switch overrides distinctive ring routing upon the detection of DTMF tones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.