At least in Germany, since we got VoIP the voice quality is absolutely crystal-clear if all devices on the line are digital. It will still sound muffled if you

At least in Germany, since we got VoIP the voice quality is absolutely crystal-clear if all devices on the line are digital. It will still sound muffled if you connect e.g. an analog phone to your VoIP router, but a DECT phone over VoIP will sound so bright and clear that it's almost frightening.