GB/T 2789-1981
Abolished
GB/T 7554-1987
Active
National standards
GB/T 7554-1987 Protected 5-unit numerical code for telegram service
GB/T 7554-1987 Protected 5-unit numerical code for telegram service
Basic Information
Standard Code:
GB/T 7554-1987
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Communication network
ICS Name:
\n Transmission system
Publish Date:
1987-03-26
Implement Date:
1987-11-01
Publisher:
National Standards Bureau
Technical Committee:
The Ministry of Posts and Telecommunications of the People's Republic of China
Pages:
8 pages
Development Information
Drafting Units:
The Institute of Data Communication Technology of the Ministry of Posts and Telecommunications and the Shanghai Long-Distance Telecommunications Bureau
Drafting Persons:
\nChen Shuyi
Referenced Standards
GB 1417-78
GB 3911-83
Related Standards
GB/T 3383-1982
Active
GB/T 3383-1982 Telecommunication transmission unit—decibel
GB/T 4110-1983
Active
GB/T 4110-1983 Pulse code modulation communication system hierarchy
GB/T 5438-1985
Active
GB/T 5438-1985 Characteristics and measuring methods for monophonic and stereophonic transmissions
GB/T 7438-1987
Abolished
GB/T 7438-1987 Numbering for telex and low speed data in national communi cation network
GB/T 13168-1991
Abolished