Technical information

Group 3 Fax Communication Standards
m 2400, 4800 bps: ITU V.27 ter
m 7200, 9600 bps: ITU V.29
m 12000, 14400 bps: ITU V.17
Error control
m ITU V.42
m MNP Classes 2–4
m Fax Error Correction Mode (ECM): ITU T.30
Data compression
m ITU V.42 bis (up to 4:1 compression)
m MNP Class 5 (up to 2:1 compression)
Dialing capability
m Tone/pulse dialing
m Auto or manual dialing and answering
Data transmission and format
m Full or half duplex operation
m Asynchronous or framed modes
m Character formats:
m 5, 6, 7, 8, data bits
m 1 or 2 stop bits
m Odd, even, or no parity
Memory requirements
m The Express Modem software uses approximately 600K of system memory (DRAM) when the
modem is turned on.
Technical
Information
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