Method and apparatus for automatic callback in a telecommunication system
US6339640B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2207/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for automatic callback used in an Advanced Intelligent Network (AIN). The system is particularly useful in the Personal Computer (PC) environment for guaranteed use of the next available channel to one of the modems of an Internet Services Provider (ISP). This invention makes use of the existing Automatic Call Back (ACB) feature designed for voice calls, to PC modem dial-up calls. In a specific example, the apparatus, that can be in the form of an Service Control Point (SCP) keeps in a table entries of unsuccessful communication attempts between modems and a called party, such as an ISP, as a result of a busy line condition on the ISP side. When the busy line condition ceases, the SCP issues the necessary control signals in the network to cause the Service Switching Point servicing a modem to notify the modem to re-dial. When the modem goes off-hook, the SSP applies dial tone. The modem that is invited to re-try establishing a communication attempt is selected from the table in the SCP. A possible selection strategy is to look at the oldest entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.