Configuring Your Modem - Multitech MultiModem MT5600ZDX User Manual

5. Select the port the modem is connected to (normally COM1 or COM2).
6. Select your serial port speed. This can be labeled "maximum speed," "DTE bps,"
7. If the communication program has an autobaud selection, make sure it is disabled.
8. If the program allows you to edit the no-connect messages (NO CARRIER,
9. Refer to the program manual or online help for other configuration choices. In

Configuring Your Modem

Your modem normally is configured through Windows or through the
communication program you are using. The default settings work best for most
purposes. However, you also can configure your modem by sending AT commands
to the modem. See Chapter 4 for AT commands.
or "baud rate." Ideally, if you use data compression, you should set your serial
port baud rate to four times the modem's maximum transmission speed or
faster; however, few files can be compressed enough to require speeds that high,
and not all serial ports can handle speeds that high.
• Set the serial port baud rate to 115,200 bps if your computer has a high speed
serial port with a 16550AFN UART or equivalent and Windows 95 or NT 4.0
• Set it to 57,600 bps if it has Windows 3.1x. If you have an older computer with
a 14550 UART, set it to 19,200 bps.
• Older Macintosh computers can use a serial port baud rate of 57,600 bps;
newer ones can use a serial port baud rate of 115,200 bps or 230,400 bps.
To see what UART your serial port uses if you have Windows 3.1x, in Program
Manager select File | Run, type MSD, and press E
the UART type. If you have Windows 95 or 98, select Start | Settings | Control
Panel, and double-click on the Modems icon. In the Modems Properties dialog
box, click the Diagnostics tab, click the port the modem is connected to, and
click More Info to see the UART type. Note that both programs will identify a
14550 UART as an 8250A UART. If you have an 80386 or later computer, your
UART is most likely a 14550 or 16550AFN.
Autobaud applies only to older modems, and can cause problems if enabled.
BUSY, NO ANSWER, NO DIALTONE), make sure there is no space between
DIAL and TONE in NO DIALTONE.
most cases you can accept the default values.
3 Advanced Options
. Select COM Ports to see
NTER
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