GB/T 12057-1989
General purpose 37-position and 9-position interface for data terminal equipment and data circuit-terminating equipment employing serial binary data interchange (English Version)
- Standard No.
- GB/T 12057-1989
- Language
- Chinese, Available in English version
- Release Date
- 1989
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 12057-1989
- Scope
- This standard applies to the interconnection of data terminal equipment (DTE) and data circuit terminating equipment (DCE) using serial binary data exchange, where control information is exchanged on separate control circuits. This standard is primarily aimed at data applications using analog telecommunication networks. This standard specifies: -- signal characteristics -- mechanical characteristics of interfaces -- functional description of interchange circuits -- standard interfaces for selected communication system configurations. In addition, this standard includes: -- recommendations and notes -- the term
GB/T 12057-1989 history
- 1989 GB/T 12057-1989 General purpose 37-position and 9-position interface for data terminal equipment and data circuit-terminating equipment employing serial binary data interchange
