A standard allowing an
auto-answer modem to determine the correct modulation
standard to use.
Last updated: 2001-04-06
V.22 ♦ V.22bis ♦ V.23 ♦ V.24 ♦ V.25 ♦ V.25 bis ♦ V.27 ter ♦ V.28 ♦ V.29 ♦ V.32
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