ZH
RU
ES

YD/T669-1994

YD/T669-1994, Total:1 items.

In the international standard classification, YD/T669-1994 involves: Telecommunication systems.

Professional Standard - Post and Telecommunication, YD/T669-1994

• YD/T 669-1994 Quality grading criteria of 2048 kbit/s 30-channel PCM multiplex equipment

Others:   yd/t 2689, yd/t 1099, yd t 1099, yd/t 1156, yd/t 1029, yd/t 1460.3, yd/t 2379.4, yd t 2583.14, yd/t 2379.5, yd/t 1484.6, yd/t 1710.1, yd/t 2691, yd/t 2344.2, yd/t 2583.14, yd/t 2559, yd/t 841.8, yd/t 2583.2, yd/t 2624, GB/T669-1994, YD/T669-1994.