Method and apparatus for initializing
US5530692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1993 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Nov 12, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/109
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for initializing ISDN adapter cards installed within a workstation having a main processor and an ISDN primary adapter for connecting the ISDN adapter cards to an ISDN primary gateway. Each ISDN adapter card has circuits for handling at least one B-channel, and a first processor associated with memory storage. The ISDN primary adapter includes a second processor associated with a second memory storage. In response to the reception of a specific polling pattern transmitted to each adapter card by the primary adapter, a pattern is transmitted to the workstation processor for requesting the loading of the second memory storage with operational code transferred from the workstation to the ISDN adapter card. The ISDN primary adapter, in response to the request pattern received by the main processor, transmits a second pattern via the ISDN adapter card that transmitted the first pattern, so that the main processor in the workstation and the processor in the ISDN primary adapter recognize the ISDN adapter card that transmitted the patterns to the workstation and to the ISDN primary adapter as the master ISDN adapter card for transmission of control information on the D-channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.