Stand alone routing switch and videoconferencing system using the stand alone routing switch
US6373850B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jul 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/351
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A videoconferencing center (31, 33) for data communications and teleprocessing is provided which comprises first routing switches having a plurality of sending ports (51, 53, 55, 57) and a plurality of receiving ports (50, 52, 54, 56), each sending port adapted to be operatively connected to a receiving data terminal equipment unit (10, 28, 29) or to a receiving port of second routing switch (32, 34), each receiving port adapted to be operatively connected to a sending data terminal equipment unit (10, 28, 29) or to a sending port of another group switching center (32, 34). Each receiving port is assigned a receiving stack (102) that is addressable in a single logical address space and each sending port is assigned a sending stack (103) for containing addresses of said single logical address space. The single logical address reduces the risk of losing data received, which risk results from the necessary limits on physical addresses of stacks. This group switching center is particularly useful for high-speed links of the type that may be required for a videoconferencing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.