Special Features:

Dperforms all switching, interconnection, relay, telephonic, supervision and signaling functions for all operational lines terminated in the system as well as information describing connectivity status

Properties:

A telephone office having among its characteristics, switching facility for connecting different types of subscribers, either voice or data. Also provides the necessary control signals allowing interfacing with any other central office within the network. Includes a collection of items, both numerous parallel electronic switching equipment and other electronic equipment. Excludes central office, telephone, dial and central office, telephone, manual.