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13
Chapter 1 - Introduction and Description
Data Compression
All models: V.42bis, (4:1 throughput) or MNP 5 (2:1 throughput) data
compression
Speed Conversion
2834 Series: Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600,
19,200, 38,400, 57,600 and 115,200 bps
1432 Series: Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600,
19,200, 38,400, and 57,600 bps
932 Series: Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600,
19,200, 38,400, and 38,400 bps
Flow Control Options
All models: Xon/Xoff, Hardware RTS/CTS, ENQ/ACK, Unix-to-Unix Copy
Protocol (UUCP) "Spoofing"
Mode of Operation
All models: Full duplex over both dial-up lines and 2-wire leased lines; automatic
or manual dialing, automatic or manual answer
Intelligent Features
All models: Fully “AT command” compatible, microprocessor controlled remote
configuration, EIA extended Automode, adaptive line probing,
automatic symbol rate and carrier frequency during start-up, retrain
and rate renegotiation, autodial, redial, repeat dial, dial linking, pulse
or tone dial, dial tone detection, dial pauses, call status display, auto-
parity and data rate selection, keyboard-controlled modem options,
nonvolatile memory and on-screen displays for modem option
parameters and up to ten telephone numbers/command lines of up
to 60 digits each, help menus
Command Buffer
All models: 60 characters
Modulation
2834 Series: Trellis Coded Modulation (TCM) at 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
1432 Series: Trellis Coded Modulation (TCM) at 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
932 Series: Trellis Coded Modulation (TCM) at 9600 bps, Quadrature Amplitude
Modulation (QAM) at 9600 (non-trellis), 4800 and 2400 bps, PSK at
1200 bps, FSK at 300 bps
Fax Modulations
2834 and 1432 Series: V.21CH2 FSK at 300 bps, V.27ter DPSK at 4800 and 2400 bps,
V.29 QAM at 9600 and 7200 bps, V.17 TCM at 14400, 12000, 9600,
and 7200 bps
932 Series: V.21CH2 FSK at 300 bps, V.27ter DPSK at 4800 and 2400 bps,
V.29 QAM at 9600 and 7200 bps