The software allows you to use your Mac's speakers for dialing purposes.
It's important to note that to use Touch Tone Checker, you need to place it in a folder called 'Address Book Plug-Ins' that resides in a 'Library' folder. If you don't have the folder, you may need to create it yourself (make sure you spell its name correctly!). Overall, this is a small but handy tool that can save you a bit of hassle when you need to dial a number stored in your address book.
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