Professional Standard - Post and Telecommunication
Status
2009-12
Latest
YD/T 709-1993
Scope
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of PCM signaling monitors. This standard applies to PCM signaling monitors and similar products.
YD/T 709-1993 history
1993YD/T 709-1993 Technical conditions for PCM signaling monitors