BS PD 6569-3.2:1992
BS PD 6569-3.2:1992
Draft standard to match to and work with ETS 300 001/NET4. Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators. Apparatus with auto-calling, auto-answering and auto-clearing facilities. Specification
standard published 10/31/1992 by British Standards Institution
