| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 9541-1988 | English | 599 |
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Days<=3
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2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type-circuits
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GB/T 9541-1988
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GB/T 9541-1988
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