300 - 379 Divisions - Transmission Sys & Testing

 

Categories

332 Division - Voice-Frequency Equipment

332 Division - Voice-Frequency Equipment ( 238 Files )

Telephone Repeaters, Pilot Wire Regulators, Echo Suppressors, Composite Sets and Associated Equipment
331 Division - Transmission Noise Testing

331 Division - Transmission Noise Testing ( 16 Files )

Central Office PBX Customer Lines and Equipment
362 Division - Type N, 0, and ON Carrier Telephone Systems and Associated Equipment Components

362 Division - Type N, 0, and ON Carrier Telephone Systems and Associated Equipment Components ( 8 Files )

362 Division - Type N, 0, and ON Carrier Telephone Systems and Associated Equipment Components


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