the author of this app says:
Let PhoneTone turn your Pocket PC into a speed dialer! Working with any phone, PhoneTone generates TouchTone sounds from your Pocket PC, dialing any number you select by sound. No cables are needed, and you don't have to remember and dial strings of numbers. Calling card numbers and access numbers are automatically included. Let PhoneTone help you really make use of your Pocket PC. Select any contact, or paste any number from your handheld, and PhoneTone dials it automatically, intelligently adding the appropriate access, country, city or area codes. PhoneTone's TouchTone sounds even let you get your phone messages and navigate your phone systems when you're overseas or at a rotary phone. Speed Dial buttons let you call your favorite numbers with just one touch. Put your calling cards into PhoneTone to easily pick which one you want to use for any call. Get the most out of your Pocket PC with PhoneTone!