10.3.3-7 Information About Communication Status

Users should be allowed access to status information concerning the identity of other system users currently on-line, and the availability of communication with external systems.

Additional Information:
Such information may influence a user's choice of destinations and choice of communication methods, as well as the decision when to initiate transmission. For example, a user might choose to link directly with another user who is currently on-line, but might compose a message for deferred transmission to an inactive user.