Telephone terminal schedule details in AutoCAD, dwg file.
<p>This Architectural Drawing is AutoCAd 2d drawing of Telephone terminal schedule details in AutoCAD, dwg file. A telephone exchange, telephone switch, or central office is <strong>a telecommunications system used in the public switched telephone network (PSTN) or in large enterprises</strong>. It interconnects telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers.</p>