Method and apparatus for reduction of call setup rate in an ATM network
US6822961B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/563
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for reduction of call setup rate in an ATM network are described. The method and apparatus are particularly useful in ATM networks used for the transfer of bearer traffic between telephone switching offices. The method involves caching a number of switched virtual circuits (SVCs) between edge interfaces to the ATM network. A cache connection is an emulated circuit between two edge interfaces that is available and idle. The apparatus provides a central policy manager which computes and distributes cache policies to cache managers located in the edge interfaces. The cache managers manage pools of cached SVCs established between two edge interfaces. The method and apparatus reduces the number of connection setup requests sent to the ATM switches. The advantage is the ability to use ATM switches which have slow connection setup rates to provide commercially acceptable telephone services in an efficient manner. The method can also be used with fast ATM switches when they become available to balance the use of bandwidth and switch resources to reduce overall cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.