| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| TB/T 3026.5-2002 | English | 359 |
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Days<=3
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Digital conference phone extension technical requirements and test methods
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TB/T 3026.5-2002
| Valid |
TB/T 3026.5-2002
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