Using the Modem Features
You can use the following functions with the ThinkPad Modem:
Data modem functions
– Asynchronous communications port interface (NS16550A
UART compatible) operation
– ITU-T V.34 up to 33.6 Kbps data modem
– ITU-T V.32bis protocols with data rates of 4800, 7200, 9600,
12000, and 14000 bps
– ITU-T V.32 protocols with data rates of 4800, 9600 uncoded,
and 9600 bps Trellis coded
– ITU-T V.21/V.22, V.22bis protocols with data rates from 300
bps to 2400 bps
– Hayes** AT command set compatibility
– Asynchronous error recovery protocol
– Microcom Network Protocol (MNP**) protocols
- Error correction via MNP classes 1–4
- Data compression via MNP class 5 and V.42bis
- MNP class 5 for up to 2x data compression
– VoiceView (Windows 95 only)
–X2
** protocol with data rates of 56 kbps (Windows 95 and
Windows NT only)
Facsimile (fax) modem functions
– Class 1 fax modem
– Class 2 fax modem
– G3 transfers
– ITU-T T.4 & T.30 operations
– ITU-T V.27ter-2400/4800 bps send/receive
– ITU-T V.29-7200/9600 bps send/receive
– ITU-T V.17-14400 bps send/receive
You can use this ThinkPad modem only on a public-switched
telephone network (PSTN). You cannot use a private branch
exchange (PBX) or some other type of digital telephone extension
line. If you connect the modem to a line other than PSTN, an error
message appears, preventing you from using the line. If you are not
sure which kind of phone line you are using, contact your telephone
company.
Chapter 2. Using Audio and Modem Features 9
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