| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1631-2007 | English | 1439 |
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Technical Requirements for Synchronous Digital Hierarchy (SDH)virtual concatenation and link capacity adjuxtment scheme
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YD/T 1631-2007
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YD/T 1631-2007
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