Lenovo ThinkPad 770Z ThinkPad 770 User's Guide - Page 63

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

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Title: C79DMMST CreationDate: 07/16/97 13:09:22 Using the ThinkPad Modem The ThinkPad modem, available on some models, enables you to send or receive data, faxes, and voice over the telephone line. This modem uses a digital signal processor (DSP) and its software can be upgraded, allowing great flexibility. It enables you to enhance the modem capability to 56 Kbps. 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) 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. Fine-Tuning Your Computer 2-39

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Using the ThinkPad Modem
The ThinkPad modem, available on some models, enables you to
send or receive data, faxes, and voice over the telephone line.
This
modem uses a digital signal processor (DSP) and its software can be
upgraded, allowing great flexibility.
It enables you to enhance the
modem capability to 56 Kbps.
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)
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.
Fine-Tuning Your Computer
2-39
Title: C79DMMST CreationDate: 07/16/97 13:09:22