Method of handling busy calls in a multiple zone communication system
US5905960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of handling busy calls, performed by a controlling entity (ZC1) in a multiple-zone system, includes the steps of issuing (201) a request to participate in a call to one or more participating zones (101, 103, and 105) and concluding (203) that at least one zone of the participating zones (101, 103, and 105) is unable to grant the call, thereby resulting in a busy status for the call. The controlling entity (ZC1) informs the participating zones (101, 103 and 105) of the busy status. A resource available notification is received (209) from a first zone, and the controlling entity (ZC1) determines (211) if a predetermined number of the participating zones (101, 103, and 105) have indicated ability to grant the call. When at least one zone of the one or more participating zones has not indicated ability to grant the call, the controlling entity (ZC1) issues (213) a still busy notification to the first zone, which still busy notification indicates that the call still has a busy status.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.