| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YDN 097-1998 | English | 919 |
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Days<=6
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China telecommunication billing and accounting system (temporary regulations)
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YDN 097-1998
| Obsolete |
YDN 097-1998
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