DTMF Dialler

This app is a DTMF Dialler.
When you want to make a call with fixed-line telephone,
you can use a iPhone's contact list.
You set a phone number, then play back the DTMF tones. A push-button telephone hear the tones, picks up and calls to the number.
The app supports signals that 0-9, A-D, #, *, and pause (,).
New: You can remove a playing history.
New: Fixed a bug that this app hangs when tap a button.
Warning: For push-button telephones only.
Warning: May not be used in some push-button telephones.
Warning: Unavailable for built-in speaker of the iPod touch. In iPod touch, external speaker is required.
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This app has 4 modes.
By sliding the screen, you can switch the mode.

■ PLAY TONE MODE
Using iPhone's contact list or This app's Recents list, play back DTMF tones.
You can attach prefix to a phone number.

■ BIG BUTTON MODE
Because this mode's play button is big, You can press the button easily while put iPhone's speaker to the handset of telephone.

■ MOBILE PHONE MODE
When want to make a call with mobile phone lines, you use this mode.
By sliding the screen, you can easy to switch this mode from other modes.

■ ENGINEER MODE
In this mode, you can also play tones A, B, C, and D in addition to 0-9, *, #, pause (,).
In this mode, you can adjust tone duration and pause duration.