3.1.5.20.2 ICE RE-INVITE Initiator

According to [IETFDRAFT-ICENAT-06], an ICE re-INVITE is sent by the offerer of that media. This protocol deviates from that specification, and stipulates that the ICE re-INVITE MUST be sent by the offerer of the call and not the offerer of the modality. This means that the caller MUST send the ICE re-INVITE.

This also means that if the local peer starts an audio call with a remote peer and then, after some time, the remote peer adds video to this call, the ICE re-INVITE for the video stream MUST be sent by the local peer, instead of by the remote peer. In contrast, the [IETFDRAFT-ICENAT-06] specification requires that the ICE re-INVITE for video is sent by the remote peer in a similar case.