This specification is the technical basis for construction quality inspection, stage acceptance, and completion acceptance in fixed telephone network switching equipment installation projects. It can be implemented as a reference for other network switching equipment installation projects.
YD/T 5077-2005 history
2014YD 5077-2014 Accepting Specification for PSTN Installation Engineering
2005YD/T 5077-2005 Accepting Specification for PSTN Exchange Installation Engineering
1998YD 5077-1998 Accepting Specifications for SPC Exchange Installation Engineering
YD/T 5077-2005 Accepting Specification for PSTN Exchange Installation Engineering was changed to YD 5077-2014 Accepting Specification for PSTN Installation Engineering.