| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 13137-1991 | English | 519 |
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Days<=3
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Specification for 12-channel telephone carrier terminal equipment used on the symmetric pains of 2.6/9.5mm coaxial cable
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GB/T 13137-1991
| Obsolete |
GB/T 13137-1991
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