| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 3454-1982 | English | 599 |
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List of definitions for interchange circuits between data terminal equipment and data-circuit-terminating equipment
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GB/T 3454-1982
| Obsolete |
GB/T 3454-1982
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