Appendix A - Technical Specifications
81
Flow Control
Software Xon/Xoff, Hardware RTS/CTS
Mode of Operation
Fax On-line modes, and
“AT”
, -- Full duplex over
dial-up lines
Intelligent Features
Automatic or manual dialing, Automatic or manual
answer, Microprocessor-controlled, EIA extended
Automode, adaptive line probing, automatic symbol
rate and carrier frequency during start-up, retrain
and rate renegotiation, DTMF detection, Autodial,
Redial, Repeat dial, Dial linking, Tone dial, Dial
pauses, Call status display, Auto-parity and data rate
selection, Keyboard-controlled modem options, Non-
volatile memory and on-screen displays for modem
option parameters and four telephone numbers/
command lines of up to 40 digits each, Help menus
Command Buffer
40 characters
Data Modulation
Trellis Coded Modulation (
TCM
) at 56,000, 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.27
ter
DPSK at 4800 and 2400 bps
V.21CH2 FSK at 300 bps (Half Duplex)
Carrier Frequencies
1800 Hz V.32/V.32
bis
/V32terbo/
(Data)
Enhanced V.34/K56
flex speeds
/33.6K/31.2K/28.8K/
26.4K/24K/21.6K/19.2K/16.8K/ 14.4K/12K/9.6K/4.8K
Carrier Frequencies
Transmit Originate: 1200 Hz
2400 & 1200 bps
Transmit Answer: 2400 Hz
(V.22bis/V.22 or
Receive Originate: 2400 Hz
Bell 212A Standard)
Receive Answer: 1200 Hz
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