A Pair element is the container for messages being exchanged with two parties to for live status, occurrence of or request for a deed. Use of Pairs allows for a common mechanism for communications and logging tools.
This is a one-way message and no response is expected. It is used to indicate status or presence. It is often used when a bi-directional Pair has not been established to indicate presence.
This is a message indicating current status. It can be all of the status for a Site or just what is updated depending on the response from the server.
This is a container for a single occurrence of an event that requires acknowledgment. If not acknowledged, it is periodically resent.
This is a container for a potentially larger message.
This is used for Site synchronization.