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AttraFax supports the following soft modems: V.21, V.27ter, V.29 and V.17. Our implementations are fully compatible with the corresponding ITU-T standards.
Type |
Speed (bps) |
Modulation |
V.21 |
300 (Full duplex synchronous mode) |
FSK ( Frequency Shift Keying ) |
V.27ter |
2400 4800 |
PSK ( Phase Shift Keying ) |
V.29 |
4800 |
QAM ( Quadrature-Amplitude ) |
V.17 |
7200 |
QAM ( Quadrature-Amplitude ) |
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