Withdrawn

GB 3971.2-1983Interoffice junction digital line signalling system for telephone automatic switching network (English PDF)

电话自动交换网局间中继数字型线路信号方式

GB 3971.2 | Evolution and historical versions

Std ID	Title	Status
GB 3971.2-1983	Interoffice junction digital line signalling system for telephone automatic switching network	Obsolete

GB 3971.2-1983 is obsolete. This page sells the obsolete edition, for projects and contracts that still cite it.

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Issued by

NBS

Level / Type

National · Mandatory

Issue date

December 15, 1983

Implementation date

October 1, 1984

Scope

GB 3971.2-1983 is the English-translated version of 电话自动交换网局间中继数字型线路信号方式.

GB 3971.2-1983 is the Chinese national standard "Interoffice junction digital line signalling system for telephone automatic switching network". It was issued on December 15, 1983 by NBS, and took effect on October 1, 1984. It is obsolete: it has been withdrawn.

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Document preview — GB 3971.2-1983

National Standard of the People's Republic of China

Issued by: NBS

Document data

1 Document data

Sector: National standard (Mandatory).

Issuing body: NBS.

Date of issue: 1983-12-15.

Date of implementation: 1984-10-01.

Status: obsolete, withdrawn.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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