BS 6450-6.1:1993
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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
Hardcopy , PDF
05-01-2009
English
02-15-1993
Committees responsible
Foreword
Specification
Subsection 1. General requirements
0. Introduction
1. Scope
2. Definitions
3. Compliance principles
4. General
Subsection 2. Electrical characteristics
5. General
6. Selection of a PSTN line for the purposes of
establishing an outgoing PSTN call
7. PSTN signalling methods
8. Incoming PSTN calls
Subsection 3. Marking and information to be provided by
the supplier
9. Marking
10. Information to be provided by the supplier
Annex
A. SCRM tests
Table
1. Information to be provided by the supplier
Figures
1. Relationship of this Section of BS 6450 with
BS 6450: Part 1: 1993 and BS 6450: Part 2: 1993
2. Circuit for determination of PSTN line selection
and application of loop calling, unguarded
signalling method
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