GB 3380-1982Ringing and tone for telephone automatic switching network (English PDF)
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Issued by
National Bureau of Standards
Level / Type
National · Mandatory
Issue date
December 29, 1982
Implementation date
October 1, 1983
Scope
GB 3380-1982 (Ringing and tone for telephone automatic switching network) is available as an English-translated PDF.
GB 3380-1982 — This Standard specifies the general switched telephone network of long; City of ringing tone and standard switching equipment; unified tone transmit location.
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Document preview — GB 3380-1982
National Standard of the People's Republic of China
- ICS
- 33.040.30
- Classification
- M 12
Issued by: National Bureau of Standards
Contents
- What this standard covers1
- Document data2
What this standard covers
This Standard specifies the general switched telephone network of long; City of ringing tone and standard switching equipment; unified tone transmit location. This Standard is applicable to the crossbar (or quasi-electronic) switching equipment and other standards as stated standard equipment.
Document data
International classification (ICS): 33.040.30.
Chinese classification (CCS): M12.
Estimated length of the Chinese original: 7,732 words.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.
Referenced standards
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GB 3380-1982
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