This EvLogArea object selects which functional areas of event logging are active for this ATM port, with events from unspecified areas being excluded from the log, and this setting does not apply to individual VCCs. An admin configures it to focus logging on the specific subsystem relevant to whatever problem they're chasing on this port. For example, an admin investigating signaling failures on an ATM port might set csAtmInterfaceConfEvLogArea to include only the signaling area rather than logging every subsystem.