GB/T 5444-1985
GB/T 5444-1985, Total:2 items.
The international standard classification for "GB/T 5444-1985" includes: Switching and signalling systems .
The Chinese standard classification for "GB/T 5444-1985" includes: Communication network performance index and testing .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB 5444-1985 Test method for technical indicators of subscriber signals in automatic telephone switching network
- GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network
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