Telecommunications switching network including improved port selector and control circuitry
US5373501A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1992 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jul 10, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/204
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A telecommunications network testing and protocol analyzer arrangement including an improved control and port selecting circuitry which may be provided in the form of a board which plugs into a standard IBM or IBM compatible PC, XT, AT expansion bus (8 bits) and allows for the operate, non-operate control of up to 180 port relays while at the same time providing 8 simultaneous control outputs for other circuit and parameter control functions. All outputs are standard TTL level outputs which may be directly utilized as relay drivers. The selector and control board is controlled by software running under standard PC DOS of MS DOS. The control and selector board may be controlled completely from the computer keyboard as well as from a remote IBM or IBM compatible computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.