A telephone circuit consisting primarily of telephone relays and associated telephone equipment designed for use in connection with a straight-forward trunk circuit to provide straight-forward signaling facilities on a two wire basis where telephone carrier equipment is not used.
Classification: Articles designed for connection to telegraphic or telephonic apparatus or instruments or to telegraphic or telephonic networks
NSN 5925-01-650-1747
NSN 4140-00-616-1347
NSN 5975-00-513-8966
NSN 5905-00-853-4149
NSN 6220-00-510-7899
NSN 5950-00-538-0590
NSN 6610-01-294-5666
NSN 5915-00-156-7877
NSN 6220-01-540-0509
NSN 6130-01-151-3491
NSN 5990-01-555-6616
NSN 6645-01-050-9794