Patent ID: 8307107

Claim:
A method for extending a real-time transfer protocol (RTP) header comprising: adding a first RTP sub-extension identifier (ID) to the RTP header; defining a length of a first RTP sub-extension having the first RTP sub-extension ID by providing a sub-extension length; providing first data corresponding to the first RTP sub-extension ID within the length defined for the first RTP sub-extension; and wherein subsequent RTP sub-extensions follow the first RTP sub-extension, wherein the first RTP sub-extension and the subsequent RTP sub-extensions are in an extended RTP header format, wherein the first RTP sub-extension has a first sub-extension name identifying the first data in the first RTP sub-extension, and at least one of the subsequent RTP sub-extensions having a second RTP sub-extension ID and a second sub-extension name identifying second data in the at least one of the subsequent RTP sub-extensions, wherein at least one of the first data and the second data include time information.