10
MINI-MODEM (56 KBPS DATA/FAX MODEM)
Data Modulation
— Trellis-Coded Modulation
(TCM) at K56flex, 33,600, 31,200, 28,800, 26,400,
24,000, 21,600, 19,200, 16,800, 14,400, 12,000,
and 9600 bps; Quadrature Amplitude Modulation
(QAM) at 9600 (non-trellis), 4800, and 2400 bps;
PSK at 1200 bps; FSK at 300 bps
Fax Modulation
— V.17 TCM at 14400, 12000, 9600,
and 7200 bps; V.29 QAM at 9600 and 7200 bps;
V.27ter DPSK at 4800 and 2400 bps; V.21CH2 FSK
at 300 bps (Half Duplex)
Carrier Frequencies (Data)
— 1800 Hz
V.32/V.32bis/V32terbo; Enhanced V.34/K56flex
Carrier Frequencies, 2400 & 1200 bps
(V.22bis/V.22 or Bell 212A Standard)
— Transmit
Originate: 1200 Hz; Transmit Answer: 2400 Hz;
Receive Originate: 2400 Hz; Receive Answer:
1200 Hz
Carrier Frequencies, 300 bps (Bell Standard)
—
1270 Hz Mark, 1070 Hz Space for Transmit
Originate; 2225 Hz Mark, 2025 Hz Space for
Receive Originate; 2225 Hz Mark, 2025 Hz Space
for Transmit Answer; 1270 Hz Mark, 1070 Hz
Space for Receive Answer