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Using AT Commands


Permanent AT Connection Settings

under Windows ME
under Windows 2000/XP
under Windows NT

This is how those AT commands are entered that you want to use whenever the respective connection is opened (please note that "permanent" does not mean you won't ever be able to change them again, just that they will be loaded every time you start the corresponding connection). This is, for instance, the case for commands that determine how cFos handles your Budget Management.
Thus, assuming you wanted a maximum monthly transfer volume of 1,000 MB to be reset on the 15th of each month, you would need to enter the following:

ATS93H=1 S96=1000 S95=1


Active Use of AT Commands

under Windows ME
under Windows 2000/XP

There are also AT commands that are intended for one-shot use – specifically those that allow you to check some form of connection status or other. These should be entered manually using a so-called terminal window or program (like Hyperterminal). For example, "ATI6" will list the COM ports installed under your current operating system:

ATI6

Ports active:
0: COM3 *
1: COM4
2: COM6
3: COM7
Next usable port: 0

OK

Additional Commands and Info on the cFos Modem Emulator

Comprehensive Overview of all Modem Commands und Registers

Permanent AT Connection Settings under Windows ME:

  1. Go to the CONTROL PANEL and select "Modems."
  2. Pick a modem and click on its "Properties."
  3. Go to "Properties" and then select "Configure."
  4. Select "Advanced" in the "Connection" submenu.
  5. Enter the AT commands (e.g., ATS19=1) you want to use under "Further Settings."
  6. Close all windows by clicking "OK" repeatedly.

Permanent AT Connection Settings under Windows 2000/XP:

  1. Go to the CONTROL PANEL and select "Telephone/Modem Options."
  2. Now go to the "Modems" tab.
  3. Pick a modem and select its "Properties."
  4. Switch to the "Advanced Options" submenu.
  5. Enter the AT commands (e.g., ATS19=1) you want to use into the "Further Initialization Commands" line.
  6. Close all windows by clicking "OK" repeatedly.

Permanent AT Connection Settings under Windows NT:

  1. Go to the CONTROL PANEL and select "Modems."
  2. Pick a modem and click on its "Properties."
  3. Now select "Advanced" in the "Properties" submenu.
  4. Enter the AT commands (e.g., ATS19=1) you want to use under "Further Settings."
  5. Close all windows by clicking "OK" repeatedly.

Active Use of AT Commands under Windows ME

  1. Go to the DUN network.
  2. Right-click on a connection with a cFos modem.
  3. Go to its "Properties."
  4. Activate "Display Terminal Window prior to Dial-in" in the "Options" submenu.
  5. Confirm your changes by clicking "OK" repeatedly.
  6. When you open this DUN connection now, a terminal window in which you can enter AT commands will pop up prior to dial-in.

Active Use of AT Commands under Windows 2000/XP

  1. Start your Hyperterminal program (by selecting START>Programs>Accessories>Communication).
  2. Enter any connection name and select any icon.
  3. Enter any call number and choose "Connection via cFos ..."
  4. Go to "Dial" on the "Connect" window.
  5. Another window will now pop up, where you should choose "Cancel." You should now be able to type AT commands (e.g., ATI "enter") directly into the Hyperterminal window.