YD/T 674-1994 Quality grading criteria of fourth order digital multiplex equipment operating at 139264 kbit/s and using positive justification (English Version)
Professional Standard - Post and Telecommunication
Status
2009-12
Latest
YD/T 674-1994
Scope
This standard specifies the product quality level and quality level requirements for 139264kbit/s positive code rate adjusted quadruple group digital multiplexing equipment. This standard applies to quadruple group digital multiplexing equipment and is the basis for assessing quadruple group digital multiplexing equipment. This standard does not apply to product sorting.
YD/T 674-1994 history
1994YD/T 674-1994 Quality grading criteria of fourth order digital multiplex equipment operating at 139264 kbit/s and using positive justification