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Total distortion measuring method for PCM channel in the telecommunication network
Translate name
STANDARD published on 1.1.1987
Designation standards: GB 7609-1987
Note: WITHDRAWN
Publication date standards: 1.1.1987
SKU: NS-1237223
Country: Chinese technical standard
Category: Technical standards GB
Latest update: 2026-06-12 (Number of items: 2 281 969)
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