Systems and methods for enabling and implementing real-time facsimile over internet protocol
US8780386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2010 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0093
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for real-time communication (e.g., fax, voice, video) via an IP Network even if a firewall or other restriction element is present or encountered. The real-time nature of the communication is ensured by preestablishing a communication session between a transfer client and a transfer server, between which the firewall or other restriction element is located. Following the preestablishment of the communication session, transmission control messages are exchanged between the transfer server and the transfer client via the preestablished communication session. The preestablished communication session prevents the firewall or other restriction element from blocking or delaying traffic (e.g., fax, voice, video traffic). The preestablished communication session establishes a full duplex communication link without restriction of or by the firewall or other communication restriction element. Accordingly, the firewall or restriction element considers traffic originating from outside of the portion of the IP network where the firewall is located to be in response to a request from the inside the IP Network. Thus, the firewall or restriction element will not ac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.