Method for resynchronizing secondary database and primary database with preservation of functionality of an automatic call distribution system
US5469503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1993 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Oct 14, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/51
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an automatic call distribution (ACD) system having a controller function, a primary system controller and a redundant system controller wherein the secondary system controller is in active operation and the primary system controller is out of synchronization with the redundant system controller, a method is provided for resynchronizing the primary system controller to the redundant system controller wherein selected database update functionality of the redundant system controller is suspended and database files and shared memory are copied in phases from the redundant system controller to the primary system controller with the means provided to continue to do data collection, call answering and queuing of calls, except for a brief period immediately preceding resynchronization. A slight delay added by the system in the process of answering incoming calls provides sufficient time for the primary system controller to resynchronize to the redundant system controller with all information and data, at which time the primary system controller assumes real-time operation and the redundant system controller returns to synchronous standby mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.