Question: In Mission Critical Video (MCVideo) scenarios, when an MCVideo client performs an active join to ongoing group communication, what typically occurs after the client receives the required communication parameters?
Option 1: The client automatically leaves the previous group to prevent video stream conflicts.
Option 2: The network initiates a brief hold on the ongoing group communication to synchronize the new member.
Option 3: Other group members are always notified of the new join through a dedicated notification signal.
Option 4: The client joins the group with or without sending an indication to other existing group members.
Explanation: In MCVideo active join scenarios, after receiving necessary communication parameters, the joining client can integrate into the ongoing group communication. The specification allows for flexibility in how this integration is signaled to existing members, hence the join can occur with or without notifying other group members, ensuring seamless and efficient mission-critical communications.