Method and apparatus for managing communications traffic
US6600720B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A traffic source emits packet-based traffic (ATM) carrying a plurality of variable bit rate calls. The traffic is managed by: measuring a parameter of the current traffic output from the source, using the measured parameter in a comparison with a parameter which is indicative of available capacity on the link; and providing a control signal for varying the operational state of the traffic source according to the comparison. The operational state can be varied by choosing a combination of a coding rate, selected from a range of coding rates, and selective use of silence suppression. A cell policing algorithm can be used, such as the GCRA. The system lowers transmission quality of voice traffic before lowering transmission quality of the data traffic, and uses silence suppression for voice traffic before using lower coding rates for the traffic source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.