Modems


Overview

Modem configuration is always required, regardless of whether the Internet Gateway is used for Internet access or for LAN-to-LAN connection.


Modems Screen

The Modems screen is reached via the Modems option on the Main Menu.

Sample Screen (Click to view)

Operation

Note: Clicking the Properties button will save any changes made on this screen. Use the Save button if you make changes on this screen only.

Data - Modems Screen

Permanent Connection

Select this if the port of the Internet Gateway is connected to a leased line or other permanent connection.
Otherwise, select Modem.

Modem

If your Modem or ISDN TA is listed, simply select it.
Otherwise, select "Other". This will use the factory default settings for your Modem or ISDN TA.
If this does not work, or the results are unsatisfactory, you will have to edit the Modem Properties.

Properties Button

Click this to open the Modem Properties screen.


Modem Properties Screen

If you select the Modem radio button on the Modems screen, and then click the Properties button, you will see the Modem Properties screen.
It is only necessary to use this screen if your modem is not listed, and the Other modem type does not function correctly. In that case, leave the modem type as Other and set the properties on this screen.

Sample Screen (Click to view)

Operation

Data - Modem Properties Screen

Initial String

This is a series of AT commands used to correctly configure your modem or ISDN.
See AT commands for further details.

Serial Line Speed

Select the speed which is equal to or below the fastest SERIAL line speed (NOT phone line speed) of your modem. Available speeds range from 4.8K to 460.8K (bps).

Dial Type

Select Tone, Pulse or Other to match your system. For Other, you must provide the Dial String (see below).

Dial String

Only required if you are NOT using Tone or Pulse dialing.
Enter the command (sometimes called the "Dial Prefix String") your modem requires to precede the phone number.

Auto Answer Commands

Enter the command strings which turn the "auto-answer" function in your modem or ISDN TA ON and OFF.


Leased Line Properties Screen

If you select the Permanent Connection (Leased line) radio button on the Modems screen, and then click the Properties button, you will see the Leased Line Properties screen.

Sample Screen (Click to view)

Data - Leased Line Properties

Serial Line Speed

Select the speed to match your leased line or permanent connection.
Available speeds range from 4.8K to 460.8K (bps).

Note that only asynchronous connections are supported.