IP application service providing system
US7706358B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Apr 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2578
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An IP application service providing method enabling inbound communication in IP application communication intended between an internal node concealed from an outside network and belonging to an inside network and an external node belonging to the outside network through a gateway device set to permit only outbound communication, includes periodically transmitting a control packet aiming at notifying of a control channel port and at maintaining a communication permission entry of a control channel path to a connection support device on the outside network from the internal node subordinated to the gateway device; notifying the internal node of a connecting destination address/port pair associated with the external node via the control channel from the connection support device; and actively opening a data channel of an IP application to the notified connecting destination address/port pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.