BS 6789-3.1:1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hardcopy , PDF
27-09-2012
English
15-03-1985
Foreword
Committees responsible
Specification
1. Scope
2. Abbreviations and definitions
3. General requirements and test conditions
4. Information to be provided by the supplier
5. Initiation feature
6. Resolution feature
7. Repeat attempts feature
Appendices
A. General conditions of test
B. Methods of test
C. Guidance
Tables
1. Tones indicative of ineffective calls
2. Characteristics of tones used for testing purposes
3. Repeat attempts: number of attempts and durations
between attempts
Figure
1. Test circuit
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