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:
Oct. 09, 2012
Filed:
Jan. 20, 2009
Applicants:
Srivatsa Srinivasan, Renton, WA (US);
Sundaram Anantharaman, Redmond, WA (US);
Gene Y. Zhang, Bellevue, WA (US);
Inventors:
Srivatsa Srinivasan, Renton, WA (US);
Sundaram Anantharaman, Redmond, WA (US);
Gene Y. Zhang, Bellevue, WA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
Subscribers of an enhanced communication system are enabled to indicate invocation or clearing of media specific features such as music-on-hold or video-on-hold. The invocation or clearing is transmitted to participating end points as a Session Initiation Protocol (SIP) re-INVITE message with Session Description Protocol (SDP) attribute descriptions identifying the feature, applicable media channels and whether the message is for invocation or clearing of the feature.