mozilla-b2g/gaia — pull request #7173 by ian-liu (2012-12-24 09:48:19+00:00)
Title: Bug 823399 - [Clock] After cancel an incoming call when there is an active alarm, the alarm will keep ringing with no alarm page r=timdream

Since window.close() does not pause the audio tag, we turn off the ringtone and vibration by itself in Clock app.