IBM ThinkPad 770X, Руководство пользователя, Страница: 23 / 229

Currently, the 56-Kbps capability is in the receive direction only (from
the ISP to your local modem). The transmit or send direction (from
your local modem to the ISP) uses V.34 technology.
Notes:
1. 56-Kbps transfer rates are not available in all locations or countries. You
must check with your ISP to determine if your area is capable of
56-Kbps transfer rates.
2. Your modem can be upgraded to support the 56-Kbps standard protocol
(ITU-T V.90). For more information on upgrading, refer to
http://www.ibm.com/thinkpad.
Telephony Features
The ThinkPad modem, with the associated software, provides the
following telephony features:
Industry standard modem support up to 56 Kbps
Industry standard fax support up to 14.4 Kbps
Computer telephony function support
– DTMF and pulse dialing
– Detecting DTMF digits received from the phone line
– Call progress monitoring
– An auto-dialing feature
| – Telephony API (TAPI) support through Windows 98 and
| Windows 95 Unimodem V (Windows 98 and Windows 95
| only)
Telephone answering machine support (Windows 98 and
Windows 95 only)
– Recording and playback of messages and greetings
– Answering device with caller ID
– Modem class-8 AT commands for TAPI calls
| Full-duplex speaker phone support (Windows 98 and Windows
| 95 only)
– Acoustic echo cancellation
Other
– DOS box operation for 56-Kbps data and 14.4-Kbps fax
– System-level and device-level power management
Chapter 2. Using Audio, Modem, Capture, and DVD Features
15