I'm not sure if this is directly helpful, but: Sailfish OS and the Jolla phone use the tone generator daemon [1] for local playback of DTMF sounds. These D-Bus calls start and stop playing a DTMF tone that is equivalent to pressing key '5' during a voice call: dbus-send --system --type=method_call --dest=com.Nokia.Telephony.Tones /com/Nokia/Telephony/Tones com.Nokia.Telephony.Tones.StartEventTone uint32:5 int32:0 uint32:1000 dbus-send --system --type=method_call --dest=com.Nokia.Telephony.Tones /com/Nokia/Telephony/Tones com.Nokia.Telephony.Tones.StopTone
tone-generator has its origin in Nokia Maemo / MeeGo, and is LGPL- licensed. From a quick glance, tone-generator seems to depend only on PulseAudio, GLib/GObject and D-Bus. It should be possible to use it (or parts of it) on Ubuntu. For reference, in Sailfish OS the tone generation daemon is used by 'voicecall manager' ([2] , roughly equivalent to Ubuntu's telephony- service) for DTMF sounds, and by telepathy-ring ([3], roughly equivalent to Ubuntu's telepathy-ofono) for call event sounds and, in some circumstances, for alerting sounds. [1] https://github.com/nemomobile/tone-generator [2] https://github.com/nemomobile/voicecall/blob/master/plugins/tonegend/src/tonegeneratorplugin.cpp [3] https://github.com/nemomobile/telepathy-ring/blob/master/modem/tones.c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1187453 Title: DTMF tones not being generated locally To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dialer-app/+bug/1187453/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
