Computers/Macintosh

Apple OS X Modem Updater

This sounds like a very unusual problem, but if you have it, this just might be the thing that saves you from tearing your hair out.

If you have an Apple laptop and can't seem to get it to dial the phone, check here.

From Apple.com...

Resolves a rare issue in which a built-in modem cannot dial up. You may see the message "Internet Connect could not open the communications device."

Via Versiontracker.com