Patent ID: 7724691
Filing Date: 2010-05-25
Classification: H04L

Abstract:
1. A method for receiving a media stream at a first device from a second device using a session invitation protocol session, the method comprising: sending a first session invitation protocol (SIP) message from a first device to a second device, wherein the first SIP message includes a first indicator indicating a request for a media stream; receiving a second SIP message from the second device at the first device, wherein the second SIP message includes a second indicator indicating acceptance of the request for the media stream; sending a third SIP message from the first device to the second device, wherein the third SIP message includes a third indicator indicating that the second device initiate streaming of the requested media stream; receiving the requested media stream from the second device at the first device; receiving a fourth SIP message from the second device at the first device, wherein the fourth SIP message includes stream parameters for the requested media stream; sending a sixth SIP message from the first device to the second device, wherein the sixth SIP message includes second stream parameters for the requested media stream, the second stream parameters defining parameters for the received media stream; receiving a seventh SIP message from the second device at the first device, wherein the seventh SIP message includes an update to the stream parameters; sending an eighth SIP message from the first device to the second device, wherein the eighth SIP message includes third stream parameters for the requested media stream defined based on the updated stream parameters; and receiving the requested media stream from the second device at the first device based on the third stream parameters.