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Database: 189759 (19 Oct 2025)
GB/T 12171-1990 English PDF
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GB/T 12171-1990
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Specification for TDM/FDM 60-channel transmultiplexing equipments used in the telecommunication network
Obsolete
GB/T 12171-1990
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Basic data
Standard ID
GB/T 12171-1990 (GB/T12171-1990)
Description (Translated English)
Specification for TDM/FDM 60-channel transmultiplexing equipments used in the telecommunication network
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
M14
Classification of International Standard
33.040.40
Word Count Estimation
31,338
Date of Issue
1/12/1990
Date of Implementation
8/1/1990
Adopted Standard
CCITT G791, NEQ; CCITT G792, NEQ; CCITT G793, NEQ
Issuing agency(ies)
State Bureau of Technical Supervision
Summary
This standard specifies 60 channels must be uniform and reaches reuse conversion equipment into the telecommunications network of the main electrical performance, interface, clock synchronization, signal requirements and requirements. This standard applies to 60-way mixed analog-digital network in various ways in the long-distance network and local network consisting of multiplex conversion equipment.