Method and apparatus for processing FISU frames according to the Signalling System 7 protocol
US6219416A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1997 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Feb 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13322
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A FISU frame handler which is connected between an adapter and a SS7 low speed network. For each FISU frames transmitted or received in the adapter, an interrupt is generated to a processor located in the adapter. In order to diminish the number of processor interruptions, the FISU frames are externally processed by the FISU frame handler by discarding repeated FISU frames transmitted from the network so as to generate idle state signals to the adapter and by converting idle state signals received from the adapter into repetitive FISU frames to transmit them to the network without interrupting the processor. In order to perform both functions, the FISU frame handler comprises two dedicated hardware units which operate according to specific methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.