Wavecom W61PC V7.5.0 - Manual (Page 293)

WAVECOM Decoder W61PC/LAN Manual V7.5 Modem and FAX modes  283
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.
ITU-T
Rec. User Data Rate [bps] User Input
Transmission
Format
Full or
Half-
duplex
2 or 4
Wire Modulation
V.17 14400/12000/9600/7200 Fax HDX 2W 128QAM
V.21 (Bell 103) 0-300 Async FDX 2W FSK
V.21 Ch.2 300 Fax HDX 2W FSK
V.22 1200 Sync/Async FDX 2W DQPSK
V.22bis 2400 Sync/Async FDX 2W 16QAM
V.23 1200/600 - 75 Async HDX 2W FSK
V.26 2400 Sync FDX 4W DQPSK
V.26bis 2400/200 Sync HDX 2W DQPSK
V.26ter 2400 Sync FDX 2W DQPSK
V.27 4800 Sync FDX 4W D8PSK