| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 18657.4-2002 | English | 704 |
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Telecontrol equipment and systems -- Part 5: Transmission protocols -- Section 4: Definition and coding of application information elements
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GB/T 18657.4-2002
| Valid |
GB/T 18657.4-2002
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