BS 6328-5:1984

Foreword
Committees responsible
Specification
1. Scope
2. Definitions and abbreviation
3. Reference level
4. General requirements
5. Electrical requirements
6. Connection requirements
7. Marking
8. Information to be provided by the supplier
Appendices
A. Advisory information on British Telecommunications
     plc wideband (FDM) circuits
B. Methods of test
Figures
1. Maximum power level of discrete frequency
     components in the vicinity of the British
     Telecommunications plc reference pilot frequency
2. Maximum permitted power levels close to the
     band edges at the input to group translating
     equipment
3. Connection arrangements for group and supergroup
     links
4. Attachments situated some distance from the
     interface
Tables
1. Maximum 5s mean power levels of group and
     supergroup apparatus
2. Level of signals received at the interface by the
     apparatus from a private group or supergroup link
3. Performance of group and supergroup links

Describes requirements for apparatus connected to British Telecommunications private wideband circuits derived by frequency-division multiplexing and presented to the user as group links, frequency band 60 kHz to 108 kHz or supergroup links frequency band 312 kHz to 552 kHz. The interface between the apparatus and British Telecommunications circuits is unbalanced (75 omega nominal), includes sections on definitions and abbreviation, reference level, general requirements, electrical requirements, connection requirements, instructions for use, information to be provided by the supplier, marking, advisory information on British Telecommunications wideband (FDM) circuits and methods of test.