BS 6328-1:1985
Withdrawn
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Apparatus for connection to private circuits run by certain public telecommunication operators Specification for apparatus for connection to speechband circuits
Hardcopy , PDF
27-09-2012
English
31-10-1985
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Foreword
Committees responsible
Specification
1. Scope
2. Definitions
3. Reference level
4. General requirements
5. Electrical requirements for apparatus other than
specialized test apparatus
6. Electrical requirements for specialized test
apparatus
7. Connection requirements
8. Marking
9. Information to be provided by the supplier
Appendices
A. Advisory information on British Telecommunications
plc speechband circuits
B. Determination of return loss or impedance
C. Measurement of receive-to-transmit loss
D. Measurement of longitudinal conversion loss
E. Measurement of transverse conversion loss
F. Measurement of longitudinal power level
G. Measurement of receiving sensitivity and
determination of crosstalk characteristic
H. Signal power level determination
Tables
1. Availability of circuit schedules on various types
of circuit
2. Nominal insertion loss of scheduled speechband
circuits at 800 Hz
3. Parameters of scheduled speechband circuits
4. Nominal insertion loss of unscheduled speechband
circuits at 800 Hz
5. Connection arrangements for up to six circuits
6. Connection arrangements for more than six circuits
7. Real ear loss values LEx
8. Data required to calculate Z
Figures
1. Load ZL for return loss measurements
2. Additional circuitry for testing apparatus in
which direct currents flow
3. Longitudinal power level limits as a function of
frequency
4. Power level limits in the frequency range d.c. to
3400 Hz
5. Power level limits at frequencies above 3.4 kHz
6. Circuit for the powering of apparatus
7. Circum-aural adaptor for occluded-ear simulator
to BS 6310: 1982
8. Tandem, omnibus and multipoint circuits
9. Suggested circuit for testing the immunity of the
apparatus to 50 Hz longitudinal interference
10. Circuit for the measurement of longitudinal
conversion loss
11. Circuit for the measurement of transverse conversion
loss
12. Circuit for the measurement of longitudinal power
level
13. Measurement of the receiving sensitivity for
apparatus with a loudspeaker
14. Physical test arrangement for the measurement of
the receiving sensitivity for apparatus with a
loudspeaker
Specifies requirements for apparatus, including specialized test apparatus, to be connected to speechband private circuits either directly or indirectly. Provides for safety of public telecommunications systems from electrical conditions originating in the connected apparatus and vice-versa, and minimizing interference with other users and the public telecommunication operators\' main transmission plant.
| Committee |
TCT/301
|
| DevelopmentNote |
Supersedes 84/63324 DC, 86/64474 DC and BS 6328-1(1982) (09/2005) Inactive for the new design. (05/2007)
|
| DocumentType |
Standard
|
| Pages |
46
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| BS 6328-2:1985 | Apparatus for connection to private circuits run by certain public telecommunication operators Specification for apparatus for connection to baseband circuits |
| BS 6833-5:1991 | Apparatus using cordless attachments (excluding cellular radio apparatus) for connection to analogue interfaces of public switched telephone networks Specification for the cordless elements within PBX apparatus with analogue interfaces to the PSTN and terminating stations treated as an entirety |
| BS 6450-1:1983 | Private branch exchanges for connection to public switched telephone networks run by certain public telecommunication operators Specification for general requirements |
| BS 6301:1982 | Specification for safety requirements for apparatus for connection to British Telecommunications networks |
| BS 6450-1:1993 | Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators Specification for general requirements |
| BS 6301:1989 | Specification for electrical safety requirements for apparatus for connection to telecommunication networks |
| BS 6320:1992 | Specification for modems for connection to public switched telephone networks and speech band private circuits run by certain public telecommunications operators |
| BS 6450-4:1993 | Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators Specification for ports |
| BS 4727-3:GRP02(1971) : 1971 | GLOSSARY OF ELECTROTECHNICAL POWER TELECOMMUNICATION ELECTRONICS LIGHTING & COLOUR TERMS - TERMS PARTICULAR TO TELECOMMUNICATIONS & ELECTRONICS - TELEPHONY TERMINOLOGY |
| BS 5428-9:1981 | Methods for specifying and measuring the characteristics of sound system equipment Programme level meters |
| BS 6789-2:1984 | Apparatus with one or more particular functions for connection to public switched telephone networks run by certain public telecommunications operators Specification for apparatus with loudspeaking facilities |
| BS 6301:1982 | Specification for safety requirements for apparatus for connection to British Telecommunications networks |
| BS 6310:1982 | Specification for occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts |
| BS 6317:1982 | Specification for simple telephones for connection to public switched telephone networks run by certain public telecommunication operators |
| BS 6305:1982 | Specification for general requirements for apparatus for connection to the British Telecommunications public switched telephone network |
| BS 4727-3:GRP03(1971) : 1971 | GLOSSARY OF ELECTROTECHNICAL POWER TELECOMMUNICATION ELECTRONICS LIGHTING & COLOUR TERMS - TERMS PARTICULAR TO TELECOMMUNICATIONS & ELECTRONICS - TELEGRAPHY INCLUDING FACSIMILE TERMINOLOGY |
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