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Modem and FAX Modes WAVECOM Decoder W74PC, W-PCI/e, W-CODE, W-CLOUD Manual V9.1.0
1. PSTN dial tone
2. Calling modem DTMF
3. PSTN rings back tone
4. 2100 Hz phase reversal answer tone
5. 1800 Hz phase reversals tone (calling)
6. 600 + 3000 Hz phase reversals tone (answer)
7. Training sequence, half-duplex (answer)
8. Sync sequence (calling, answer)
9. Training sequence (calling)
10. Sync sequence full-duplex (calling, answer)
11. Second training sequence (answer)
12. User data
Modulation Types
The table below lists the various ITU fax and modem modulation modes.
User Input
Transmission
Format