| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 958-1998 | English | 2149 |
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Days<=10
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Digital subscriber signalling system No.1 (DSS1). signalling specification for frame mode basic call control
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YD/T 958-1998
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YD/T 958-1998
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