Method for preventing overload condition in a circuit switched arrangement
US6987848B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2001 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Apr 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/122
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for alleviating congestion problems in prior art networks delays provision of dial tone signals to terminals that are, likely, carrying out a re-dial attempt in excess of a preselected number of re-dial attempts. A determination that the terminal seeking to establish a connection is likely carrying out a re-dial attempt may be based on numerous factors, such as the time since the last time the terminal desired to establish a call, the duration of the last call, etc. The delay that is imposed is, advantageously, sensitive to the number of times the terminal has attempted a re-dial, and on other conditions, such as the cause of the failure to establish a connection, network congestion conditions, etc. In imposing the dial tone delay, identities of the terminals that are to receive a delayed dial tone are placed in a FIFO queue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.