Internetwork gateway to gateway alternative communication
US6064653A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1997 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Jan 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/6486
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Voice calls between two end location gateway servers of a data internetwork are diverted, during periods of unacceptable network conditions, through the public switched telephone network (PSTN). A plurality of such diverted calls may be multiplexed into a single ISDN or T1 channel, thereby permitting a sharing of the more expensive cost of PSTN routing. Incoming calls are appropriately formatted for digital transmission, including compression when applicable, by the gateway servers and multiplexed for transmission either through the data network or back through an ISDN channel or the like through the PSTN. Calls may be expeditiously re-routed back through the data internetwork when data network conditions improve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.