The VCT library provides a conference mode where the users of multiple systems can chat at the same time.
Conference Mode
In conference mode, participants can all talk at the same time. This mode supports conversations among up to eight systems.
Fig. 1 Conversation in Conference Mode depicts four systems (parties A through D) participating in a session. Even if one of the participants (A) is currently talking, all of the other participants (B, C, and D) can still talk.
In conference mode, no system needs to act as the host machine because there is no need to control the conversation (that is, to control who is currently talking, who is participating in the conversation, and who can send a request to talk). However, the game must determine which systems can participate in the conference.