iMac: Modem Extension Required for Dialing With Remote Access

If the proper modem extension is not installed and turned on, Remote Access cannot dial the modem and the Modem control panel does not show an available serial port.

Symptom

When attempting to use your computer's modem to make a connection through Remote Access, the following error message is displayed: "The connection attempt failed: An unexpected Open Transport error occurred." Additionally, the Modem control panel does not show an available serial port in its "Connect via" area.


Solution

Use the Extensions Manager to make sure the appropriate modem extension is installed and turned on:

Computer
Extension
iMaciMac Modem Extension
iMac (Slot loading)Internal V.90 Modem
iMac (Summer 2000)Internal V.90 Modem

If the extension is turned off, turn it on and restart the computer.

If the extension is not installed, (re)install the Mac OS 9 Update, which updates Mac OS to version 9.0.4.

If you choose not to install Mac OS 9 Update, you can perform a custom installation of the modem software from the iMac Software Install CD.

For related information on this topic, please see the following articles:

Document 50055: "Miscellaneous Manuals" Troubleshooting Handbook.
Document 30917: "Power Macintosh G3 (Blue and White): Installing Internal Modem Software"

Note: The parenthetical product description (Summer 2000) refers to the summer of the Northern Hemisphere.

Published Date: Feb 20, 2012