The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2006
Filed:
Feb. 20, 2001
Fu-hua Liu, Cupertino, CA (US);
Paul Pay-lun Ju, Cupertino, CA (US);
Chen-huei Chang, Cupertino, CA (US);
Fu-Hua Liu, Cupertino, CA (US);
Paul Pay-Lun Ju, Cupertino, CA (US);
Chen-Huei Chang, Cupertino, CA (US);
Innomedia PTE, LTD, Singapore, SG;
Abstract
A method of audio communication between a first telephony client located behind a network address translation (NAT) server and a remote second telephony client is disclosed. A calibration datagram is sent from the first telephony client to the second telephony client on a user datagram protocol (UDP) channel identified for sending audio data. The second telephony client extracts the source address and port number to identify a reverse UDP channel for sending audio data to the first telephony client.