Specifications

B-2 Courier V.Everything External Modem: Getting Started
handshake adjustment to 300 bps Quadrature
Amplitude Modulation (QAM).
ITU-T V.32bis 14.4/12 Kbps; 9600/7200
bps
asynchronous Trellis
Coded Modulation (TCM); 4800 bps
asynchronous
Quadrature Amplitude Modulation (QAM)
ITU-T V.32 9600
bps
asynchronous, Trellis Coded Modulation
(TCM);
4800 bps asynchronous, Quadrature
Amplitude Modulation (QAM)
ITU-T V.22bis 2400 bps
asynchronous, Quadrature Amplitude
Modulation (QAM)
Bell 212A 1200 bps (also V.22)
asynchronous, Differential
Phase Shift Keying (DPSK)
ITU-T V.23 1200 bps asymmetrical with 75 bps back channel
with Frequency Shift Keying (FSK), used by some
U.K. and European phone systems.
Bell 103 300 bps (ITU-T V.21 optional)
asynchronous,
Frequency Shift Keying (FSK)
Error Control, Data Compression, Testing, and Dialing
ITU-T V.42 LAPM error control, 1200 bps and higher
MNP Levels 2, 3 and 4 error control, level 5 data
compression, 1200 bps and higher
HST Asymmetrical mode, at 16.8/14.4/12 Kbps; 9600/
7200/4800 bps, 450/300 bps back channel
ITU-T V.42bis Data compression, 1200 bps and higher
ITU-T V.54 Digital and remote digital loopback testing
ITU-T V.25
bis
Dialing and answering method for automatic calling
and/or answering equipment.
Fax
The Courier provides Group III-compatibility when controlled
by Class 1 or Class 2.0 fax software. In addition, the Courier
adheres to the following standards:
TIA/EIA-578 Service Class 1 Asynchronous Facsimile DCE
Control Standard