Multitech MT2834BL User Manual download pdf (Page 4)

How to set it up

Important Fact #1

The Windows Control Panel is in no way related to the operation of a Topsail modem connection.

Topsail communicates directly with the modem through the serial port, and circumvents the

Microsoft Modem Configuration. In fact, configuring the modem via the Control Panel is more

likely to have a negative effect than a positive one. This is because Windows modem drivers may

overwrite the configuration settings within the modem itself, obliterating the carefully constructed

initialization sequence that you have loaded into it.

On the computer running Topsail, configuration is fairly straightforward.

• Connect the modem to a serial port on the computer (COM1 will be used here)

• Set the Answer/Originate switch on the modem to Originate.

• Set any dipswitches that may be required. For the MT2834BL the switches

should be set as:

“UP, UP, DN, UP, DN, UP, DN, DN, DN, UP, UP, DN, DN, DN, UP, DN”

• Next start the Topsail serial communications driver (L4IO.exe) and turn

communications to off, if they are not already.

(Option menu ->End Communications)

• Configure the communications line between PC and Modem.

(File menu ->Comm Line Setup)

o We use 9600 for baud, EVEN/7 for parity/data bits, and 1 stop bit. You

may use other settings, but be sure to configure your PC modem to use the

same ones.

• Use the RTS/CTS communications option.

(Options menu -> Use Request to Send/Clear to Send (w/Modem) )

• Add a remote dial-up site.

(Dial-Up menu -> Edit Sites)

o Enter a Name and Phone number

o Click the Modem button to reveal modem configuration info.

o Add the modem initialization string

(For MT2834BL we use “AT$SB9600$MB9600Q2&W0”)

o Click OK to accept the modem configuration.

o Click Exit to leave the Edit Sites dialog box.

• Either choose manual dial, or set up the automatic dialing, as your situation

requires.

(Dial-Up menu -> Use Remote Access (Modem) -> Manual Dial)

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Multitech MT2834BL User Manual Page 4