Error Control, Data Compression, Testing, And Dialing; Fax - 3Com 56K Command Reference Manual

E-2 A E: T
PPENDIX ECHNICAL
Error Control, Data
Compression, Testing,
and Dialing

Fax

I
NFORMATION
This modulation
ITU-T V.23
Bell 103
This
ITU-T V.42
MNP
HST
ITU-T V.42 bis
ITU-T V.54
Your Business Modem provides Group III -compatibility when controlled
by Class 1 or Class 2.0 fax software. In addition, your Business Modem
adheres to the following standards:
This
TIA/EIA-578
TIA/EIA-592
ITU-T V.17
ITU-T V.29
ITU-T V.27 ter
ITU-T V.21
Supports
1200 bps asymmetrical with 75 bps back channel with
Frequency Shift Keying (FSK), used by some U.K. and
European phone systems.
300 bps (ITU-T V.21 optional) asynchronous, Frequency
Shift Keying (FSK)
Supports
LAPM error control, 1200 bps and higher
Levels 2, 3 and 4 error control, level 5 data compression,
1200 bps and higher
Asymmetrical mode, at 16.8/14.4/12 kbps; 9600/
7200/4800 bps, 450/300 bps back channel
Data compression, 1200 bps and higher
Digital and remote digital loopback testing
Supports
Service Class 1 Asynchronous Facsimile DCE Control
Standard
Service Class 2.0 Asynchronous Facsimile DCE Control
Standard
14.4/12 kbps
9600/7200 bps
4800/2400 bps
300 bps