3Com 56K manual Error Control, Data, Dialing, Adheres to the following standards, This Supports

E-2APPENDIX E: TECHNICAL INFORMATION

	This modulation	Supports
	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,	This	Supports
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.42 bis	Data compression, 1200 bps and higher
	ITU-T V.54	Digital and remote digital loopback testing
Fax 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	Supports
	TIA/EIA-578	Service Class 1 Asynchronous Facsimile DCE Control
		Standard
	TIA/EIA-592	Service Class 2.0 Asynchronous Facsimile DCE Control
		Standard
	ITU-T V.17	14.4/12 kbps
	ITU-T V.29	9600/7200 bps
	ITU-T V.27 ter	4800/2400 bps
	ITU-T V.21	300 bps