BS PD 6569-6.1:1992
BS PD 6569-6.1:1992
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". Specification for series connected apparatus . Apparatus having maximum allowable impai
standard published 10/31/1992 by British Standards Institution
