Interfaces to external equipment (such as T1/E1 trunks, optical interfaces, etc.) must typically be
configured at both ends and the status of the links monitored. The EMS can implemented to monitor
traps or other status indicators on the interface, present a real-time indication of the status on
the map view and chassis view of the system, and keep a record of the relevant data in the database.
The EMS preserves a record of the configuration of the external interfaces and can upload or download
configuration changes to the network element on demand.