The modem enables you to send or receive data and faxes over the telephone line. This modem uses a digital signal processor (DSP), and its software can be upgraded, allowing great flexibility. It supports ITU-T V.90 protocols with data rates of 56 Kbps, and K56flex protocol with data rates of 56 Kbps.
You can use the 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.
|Attention for use overseas|
For more information on the use of the modem in a specific region, contact the IBM customer support center in that region.
To avoid shock hazard, do not connect the cable to or disconnect the cable from the telephone outlet on the wall during electrical storms.
To use the modem, connect one end of the telephone cable to the modem connector; then connect the other end to the telephone outlet on the wall.
Note: To use a DOS modem application in the Windows 98 or Windows 95 DOS box, disable the infrared port.
When you start Windows, the modem automatically starts and is ready for use.
To use the modem outside the region where you purchased the computer, you must change the region name.
To take advantage of your modem's 56-Kbps standard protocol (ITU-T V.90), you must first make sure that your Internet service provider (ISP) supports the protocol.
Contact your ISP and determine which 56-Kbps modem protocol it uses.
If your ISP supports the 56-Kbps standard protocol (ITU-T V.90) or K56flex technology, your modem uses the same 56-Kbps protocol. Your modem and your ISP must support the same 56-Kbps protocol, or your maximum connection speed will be limited to V.34 technology.
Significantly higher Internet modem connection speeds up to 56 Kbps require all-digital transmission connections from your ISP to the line card in the central office to which your phone line is connected. The higher speeds at which this modem is capable of operating on a specific network implementation is only one of many ways to deliver high-quality voice telephony to customers. Failure of the modem to operate at high speed should not be reported as a fault, unless ordinary voice telephone calls are substandard.
In the U.S., current FCC regulations limit the maximum speed for downstream communication to 56 Kbps. Even though your modem contains 56-Kbps technology, the connect rate in the receive direction might be significantly less than 56 Kbps.
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.
|Note:||56-Kbps transfer rates are not available in all locations. You must check with your ISP to determine if your area is capable of 56-Kbps transfer rates.|
As a default, the K56flex technology is disabled. To enable the technology, do the following:
The modem provides the following telephony features:
|Error correction protocols||
|Data compression protocols||
If you use a modem communication software program, your modem might need to be set for Auto Answer. The Auto Answer feature enables your computer to answer calls from another computer automatically.
Your modem communication software determines how the modem operates with Auto Answer. Some fax programs do not require you to type an AT command to turn Auto Answer on or off. For specific instructions, see the user's guide that came with the communication software.
To start the Auto Answer feature from your communication software, use the command ATS=n. This command tells the modem to answer a call after a certain number of rings. To set the number of rings, replace n with any number from 1 to 255.
Turn Auto Answer off when you are not using your modem. Otherwise, callers will be greeted with the modem tone. To turn Auto Answer off, use the command ATS0=0.
In some communication software programs, you might need to select the "Auto Answer On" or "Auto Answer Off" option to turn off the Auto Answer feature.
|Note:||If you are using Auto Answer with a fax software program, setting a high number of rings enables you to answer the telephone before the fax modem answers.|
If your computer came with fax software already installed, use the fax software documentation included in the box your computer came in or the fax software online help for additional information.
You can use the modem under the Windows 3.1 or OS/2 Warp.
If you are using Windows 3.1 or OS/2 Warp as your operating system, you need to enable the "modem ISA resource" first.
To enable the modem ISA resource,
at the DOS prompt, enter the following:
PS2 IMODEM ISARESOURCE ENABLE
and restart the system.
The modem is now set to COM2 assigned with the address 2F8 and IRQ3.
To check the status of the modem, enter the following:
You can set another port to the modem entering the following
at the DOS prompt:
PS2 IMODEM ISARESOURCE ENABLE ADDRESS x
where x is the port number for the modem. You can select any port from COM1 to COM4.
The addresses and interrupts supported by your computer are:
You can change the region setting for the modem on Windows 3.1 or OS/2 Warp.
For Windows 3.1
For OS/2 Warp