| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YDN 105-1998 | English | 1639 |
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Synchronous digital hierarchy (SDH) - Test method of multiplexing terminal equipment (internal standard)
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YDN 105-1998
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YDN 105-1998
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