US Robotics Courier V.Everything - Appendix A Technical Information; Technical Specifications; Standards Compatibility; Modulation

Technical Information A-1
Appendix A
Technical Information
This chapter describes technical and serial port information.
Technical Specifications
Standards Compatibility
Your Courier V.Everything uses multiple standard data communications
protocols and is also compatible with many nonstandard schemes. The
following schemes are supported:
Modulation
This modulation Supports
x2 Up to 56 kbps
ITU-T V.34 33.6/31.2/28.8/26.4/24/21.6/19.2/16.8/14.4/12 kbps;
9600/7200/4800 bps asynchronous Trellis Coded Modulation
(TCM)
V.FC 28.8/26.4/24/21.6/19.2/16.8/14.4 kbps asynchronous TCM
V.32 terbo 21.6/19.2/16.8/14.4/12 kbps; 9600/7200 bps asynchronous
TCM; 4800 bps asynchronous Quadrature Amplitude
Modulation (QAM)
HST 16.8/14.4/12 kbps; 9600/7200 bps asynchronous,
asymmetrical, 450 bps back channel with automatic handshake
adjustment to 300 bps TCM and QAM; 4800 bps
asynchronous, asymmetrical, 450 bps back channel with
automatic handshake adjustment to 300 bps QAM.
ITU-T V.32 bis 14.4/12 kbps; 9600/7200 bps asynchronous TCM; 4800 bps
asynchronous QAM
ITU-T V.32 9600 bps asynchronous, TCM; 4800 bps asynchronous, QAM
ITU-T V.22 bis 2400 bps asynchronous, 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