StarTech.com SV3253DXI - Manual (Page 55)

Instruction Manual
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1. Place the modem near the SVxx53DXI and an available telephone
jack. Connect the modem to the telephone jack, data cable, and power
source according to the instructions in its documentation. The opposite
end of the modem’s data cable should be a DB9 female serial connection.
2. Connect that end of the cable to the Serial connection on the rear
panel of the SVxx53DXI.
Modem configuration
Although most connections will work appropriately with the default settings on
SVxx53DXI, manual changes can be made. To do so:
1. Login to the Web interface as Admin.
2. Click Modem, listed on the left side of the main page.
3. You will then be presented with the Modem Option menu.
4. Make the following changes to enable and configure the modem connection:
• Enable modem connections (PPP) via serial port/modem: select Enabled.
• Baud rate to use (affects connection between us and the modem only): select 115200.
• Init string: leave as ATE0S0=1&K3 (see below).
The baud rate dictates the connection speed between the SVxx53DXI’s serial port and
the modem, and does not affect the connection speed between the local and remote
modems, as they will negotiate their own connection speed when a connection is made.
It is highly recommended that this setting be left at the default for best performance.
The initialization (“init”) string is the command (using the standardized Hayes AT
command set) that the SVxx53DXI will send to the modem to activate it. The string
included should work with the majority of modems and configures the following
connection properties: answer incoming calls on the first ring, enable hardware flow
control, and lock the connection speed.
Your modem’s documentation will describe other potential init strings that you can use
to alter the connection properties. For instance, you could commit the settings to the
modem’s non-volatile memory (NVRAM) or allow the modem to adjust the connection
speed for greater stability (and so on). You may wish to test the connection with the
default init string first, before making changes specific to your modem model or
situation, to simplify the troubleshooting process.
5. Click the Commit button to save your changes and activate the modem
feature with the specified settings.