Comment 1 for bug 1356428

I agree that the default is currently too loud.

> The tone-generator should be fixed to do one of the following:
> 2) respond to overall volume changes of the system volume at a reduced percentage.
It should do that already, but I'll test in detail tomorrow.

The maximum level is defined in the tone-generator upstart session file (variable DTMF_VOLUME), as a percentage (0..100) of the system volume, (seems to be quite non-linear, e.g. 20 is way louder than 10).

The volume slider is obeyed - but after reboot sometimes forgotten, see bug 598308.

I'll give more detail after testing, but also cc:ing Ricardo, he is working on bug 598308 as well as the overall system default volumes.