Antique Telephone Wiring Diagrams. This is a large subject and this is a condensed description of the diagram system. Telephone wiring for a phone outlet is typically either 1 2 or 3 pairs 2 4 or 6 the diagram below provides the transposition between these standards. antique phone wiring diagram from fixschematicveronica.z21.web.core.windows.net Wiring diagram (with […]