Lenovo 4284-WW9 Laptop User Manual


 
Fast Connect
Note: This function can work only if the phone line and server equipment at your ISP (Internet Service
Provider) access point are compatible with it. Check with your telephone company and ISP.
Modem on Hold
Note: This function can be used only in certain countries or regions, because it relies on the specications
of the Call Waiting function and Caller ID function, which each country or region sets independently. It has
been tested and shown to work in the United States and Canada. In addition, the function can work only if
it is compatible with the server equipment at your ISP.
Industry standard fax support up to 14.4 Kbps:
Fax protocols
V.21 Ch 2 (300-bps fax)
V.17 (up to 14.4-Kbps fax)
V.29 (9600-bps fax)
V.27ter (4800-bps fax)
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)
Modem commands
This section provides information on the AT modem commands, in case you need to operate your modem
from terminal software.
Running commands
Your modem is in command mode at power-on and is ready to receive and run AT commands. It remains in
command mode until it connects with a remote modem. You can send commands to the modem from an
attached terminal or a PC running a communication program.
The modem is designed to operate at common DTE speeds ranging from 115.2 Kbps (or 57.6 Kbps) to 300
Kbps. All commands and data must be issued to the modem at one of the valid DTE speeds.
Command format
All commands except A/A/
A/
must begin with the prex AT, followed by the command letter, and must end with
the Enter key. Spaces are allowed in the command string to increase readability, but the modem ignores
them while executing a command. All commands may be typed in either uppercase or lowercase, but not in
mixed case. A command issued without a parameter is considered to have parameter “0”.
Examples: AA
A
TL[EntTL[Ent
TL[Ent
er]er]
er]
This command causes your modem to lower the volume from its speaker.
Refer to the following tables of AT commands and extended AT commands.
58 User Guide