On 5.0.0.67 with terminal:
[defaultuser@JollaC2 jolla-voicecall]$ pwd
/usr/share/jolla-settings/pages/jolla-voicecall
[defaultuser@JollaC2 jolla-voicecall]$ ls
ActivateSimCardView.qml ContactSelector.qml
BarSwitch.qml PlayerControlsDockedPanel.qml
ButtonGroup.qml QuickMessagesPage.qml
CallBarring.qml RecordedCallsPage.qml
CallCounters.qml SimCardCallSettings.qml
CallForwarding.qml SwitchField.qml
CallRecording.qml VoiceMail.qml
CallSettings.qml voicecall.qml