electronic-switching-system

Topic		Replies	Views	Activity
Cutting Over an Electromechanical Telephone Exchange to Electronic Switching Continuity telephone-switching , electronic-switching-system , western-electric , step-by-step		0	289	4 April 2023
Telephone Switching Living History in Seattle Continuity telephone-switching , connections-museum-seattle , crossbar , strowger-switch , electronic-switching-system		0	394	21 October 2022