Dial using your Mac's speakers
Version: 3Touch Tone Checker is an Address Book Plugin that provides an additional command to the menu that appears when you click the label next to a phone number.
Operating System: Mac OS X
The command will play dial tones for the number in question through the computer's speaker. Thus, Touch Tone Checker will allow you just to hold the phone next to the computer's speaker instead of having to dial the number.
NOTE: To install Touch Tone Checker, it needs to be placed in a folder named 'Address Book Plug-Ins' inside a 'Library' folder. You may need to create that folder (taking care to get the spelling right).