Comment 5 for bug 1346397

@Alfonso

Can you clarify the original bug description? Is the call hold happening locally as in (1) or remotely as in (2), or both?

I re-tested scenario (2) with my AT&T SIM and there's no tone generated, nor does the UI reflect the fact that the call has been put on hold. That said, a quick test on Android shows that it doesn't support any kind of UI notification when a call has been placed on hold, the call timer continues to run and there's no other visual indication. I do hear a tiny change in the audio on the Android phone, but it's not really a tone, it's more the fact that the audio has been cut off, so it goes from white noise to silence.

If the RIL notifications aren't received, there's not much we can do. If they are received, we should confirm whether or not this results in any kind of notification via DBus that could be listened to by the dialer-app. If such mechanism exists, we should add a task for the dialer-app.