YDJ 50-1988
Technical specifications for Installation engineering construction and acceptance of urban local telephone SPC exchange equipment (English Version)
- Standard No.
- YDJ 50-1988
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Post and Telecommunication
- Latest
- YDJ 50-1988
YDJ 50-1988 history
- 1970 YDJ 50-1988 Technical specifications for Installation engineering construction and acceptance of urban local telephone SPC exchange equipment
