Real time firewall security
US6400707B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Aug 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/1205
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for conducting a voice communication through a hybrid network which includes a packet internetwork, such as the Internet, connected to a circuit switched telephone network. The packet internetwork is connected to the switched telephone network through a static filter device, a packet switch, and a telephone network controlled gateway. A control processor is connected to the packet switch and to the filter device. The filter device generates a real time copy of call set up signaling dialog between the party requesting connection and the gateway which passes through or to the filter device. This duplicate of set up signaling is delivered from the filter device through the packet switch to the control processor. The control processor generates therefrom a filter device control signal which specifies the filter parameters derived from the set-up signaling dialog. This filter device control signal is delivered to the filter device and reconfigures the filter device to set filter parameters which are customized to the specific communication. The filter device thereupon filters the conversation stream of packetized voice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.