Lenovo ThinkPad 770Z ThinkPad 770E/ED Supplement to the Users Guide - Page 23

Using the Modem Features, ITU-T T.4 & T.30 operations

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Using the Modem Features The ThinkPad modem, available on the ThinkPad 770ED computer, enables you to send or receive data, faxes, and voice over the telephone line. This modem uses a digital signal processor (DSP) and is capable of 56-kbps data transmission under the Windows 95 and Windows NT environment. You can use the following functions with the ThinkPad Modem: Data modem functions - Asynchronous communication 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 the 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 Chapter 2. Supplementary Information 17

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Using the Modem Features
The ThinkPad modem, available on the ThinkPad 770ED computer,
enables you to send or receive data, faxes, and voice over the
telephone line.
This modem uses a digital signal processor (DSP)
and is capable of 56-kbps data transmission under the Windows 95
and Windows NT environment.
You can use the following functions with the ThinkPad Modem:
Data modem functions
–
Asynchronous communication 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 the 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
Chapter 2.
Supplementary Information
17