<computing standard>

The ITU-T standard defining interchange circuits between DTE and DCE. V.24 is the ITU-T equivalent of EIA standard EIA-232C, though V.24 only specifies the meaning of the signals, not the connector or the voltages used.

V.24 recommends 12 modem carrier frequencies that will not interfere with Dual Tone Multi-Frequency or other telephone control tones. These are:

GROUP A = 920 Hz, 1000 Hz, 1080 Hz, 1160 Hz GROUP B = 1320 Hz, 1400 Hz, 1480 Hz, 1560 Hz Group C = 1720 Hz, 1800 Hz, 1880 Hz, 1960 Hz

(01 Sep 2004)

V.17, V.21, V.22, V.22bis, V.23 < Prev | Next > V.25, V.25 bis, V.27 ter, V.28

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