| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 21642.4-2012 | English | 1059 |
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Days<=7
|
Technical requirements for IP video conference system devices -- Part 4: Gatekeeper
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GB/T 21642.4-2012
| Valid |
GB/T 21642.4-2012
|