BS 6450-6-6.1:1986 PDF

Published Date: 02/15/1993

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators. Simple call-routeing mode (SCRM)-Specification for the simple call-routeing mode of PBX operation, with terminating stations treated as an entirety

Published Date: 09/30/1988

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators. Simple call-routing mode (SCRM).-Specification for the simple call-routing mode of PBX operation, with terminating stations treated as an entirety

Published Date: 10/15/1997

Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface-General requirements

Published Date: 10/28/1990

Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators-Specification for the procedure for in-service observation of PBXs undergoing type approval

Published Date: 01/01/2004

Published Date: 12/07/1999

Published Date: 01/01/2003

Published Date: 06/08/2000

Published Date: 06/05/2000

Published Date: 09/04/2001