Apparatus with one or more particular functions for connection to certain public switched telephone networks. Specification for series connected apparatus, Apparatus having maximum allowable impairments— 16 стр.
Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators, Specification for general requirements— 12 стр.
Connectors for analogue telecommunication interfaces, Sockets for use with plugs specified in BS 6312-1, Particular requirements for fixed socket-outlets used in permanent wiring installations— 22 стр.
A draft amendment to BS 6789-1:1984 "Apparatus with one or more particular functions for connection to the British Telecommunications public switched telephone network. Part 1. Specification for general requirements"— 8 стр.
Text for BS 6789-2:1992 "Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunication operators. Part 2. Specification for apparatus with loudspeaking facilities"— 44 стр.
Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators, Specification for apparatus with loudspeaking facilities— 24 стр.
