DialTones is an Android application for dialing landlines with an Android device. It does so by generating dual-tone multi-frequency (DTMF) signals for phone numbers found in the device's contact list.
DialTones is open-source software made available with the MIT License and is copyright (c) 2010 Dustin Graves.
The DialTones Android application for dialing landlines with an Android device has been added to the site. Source code for the application and an Android Package file that can be installed on an Android device are available. Find out more here.