| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 20185-2006 | English | 729 |
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Days<=5
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Optical interface requirements for equipment and systems relating to the synchronous digital hierarchy
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GB/T 20185-2006
| Valid |
GB/T 20185-2006
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