Equipment - Telephone exchange unit Telephone exchange C Media reuse Reuse this media Can you reuse this media without permission? Yes Conditions of use Public domain This media item is listed as being within the public domain. As such, this item may be used by anyone for any purpose. Attribution Please acknowledge the item’s source, creator and title (where known) Have a question? Contact Williamstown Historical Society Inc Download Download image (jpeg) Historical information Small telephone exchange units like this would have been used in offices or small businesses to connect telephone calls to a single line to the correct person. Physical description Six-line telephone exchange unit in wooden casing. Inscriptions & markings "C. of A. P.N.G."