| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 7436-1987 | English | 769 |
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Specifications of TDM equipment operating on analog telephone-type circuit for telegraph and lower-speed data
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GB/T 7436-1987
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GB/T 7436-1987
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