These interim regulations apply to the construction supervision of new optical cable transmission system equipment, telephone switching equipment, and microwave relay system equipment installation projects. Expansion and reconstruction projects may be implemented with reference to these interim regulations.
YD 5125-2005 history
2014YD 5125-2014 Supervision Specification of Installation Engineering for Communication Equipment
2006YD 5125-2005 Provisional Specification Speeification of Installation Engineering for Communication Equipment