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| Chinese National Standard Category: Communication equipment in general |
| English Title: | Requirement of synchronous digital hierarchy (SDH)equipment function |
| Chinese Title: | 同步数字体系(SDH)设备功能要求 |
| Standard No.: | YD/T 1022-1999 |
| Category No.: | M30 |
| Issued by: | Ministry of Information Industry |
| Issued on: | 1999-07-13 |
| Implemented on: | 1999-12-1 |
| Status: | superseded |
| Superseded by: | YD/T 1022-2018 Requirements of synchronous digital hierarchy (SDH) equipment function |
| Superseded on: | 2019-4-1 |
| Abolished on: | |
| Superseding: | |
| Word Count: | 82500 words |
| Similar Standards: | CNCA 07C-031-2007 YD/T 565-1992 T/GDAHVAC 2-2021 T/CCSA 243-2019 GB/T 7440-1987 GB/T 42891-2023 YD/T 4177.11-2022 YD/T 4165-2022 GB/Z 41383-2022 GB/Z 41293-2022 GB/T 38624.2-2021 GB/T 39576-2020 GB/T 39574-2020 GB/T 39575-2020 GB/T 39573-2020 T/GDAHVAC 1-2021 GB/T 37288-2019 GB/T 20068-2017 GB/T 33711-2017 GB/T 32632.2-2016 |
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