Wavecom W-SPECTRA (Automatic Monitoring System) V1.1.0 Instrukcja Użytkownika Strona 243

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WAVECOM Monitoring System W-SPECTRA, W-SPEED Manual V1.1.0 Modem and FAX Modes
233
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
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