Patent ID: 8842150

Claim:
A method comprising: receiving a first message in a first protocol for a video call between a first end point communicating in the first protocol and a second end point communicating in a second protocol, the first message for setting up the video call using a first call set-up procedure, wherein the first message includes media information; storing the media information included in the first message; initiating a second call set-up procedure with the second end point for connecting the second end point and the first end point for the video call, the second call set-up procedure including a second message sent to the second end point for setting up the video call, wherein the second message does not include the media information; and based on initiating the second call set-up procedure, exchanging messages with the second end point for establishing the video call between the first end point and the second end point, comprising: determining, from the stored media information, information on capabilities of the first end point for supporting the video call; and mapping the information on capabilities of the first end point for supporting the video call to additional messages that are sent to the second end point for establishing the video call between the first end point and the second end point.