2.5.13 Add Video to a Voice Call
This use case, illustrated in the following diagram, describes how a protocol client adds video to a voice call with a remote user.
Figure 12: Steps for adding video to a voice call
The protocol clients are signed in, as described in section 2.5.5.
These steps are the same as the steps in section 2.5.12.
Real-time voice and video packets are exchanged between Client A and Client B.