http://testedgroup.com/category/as4428 The taxonomy view with a depth of 0. en http://testedgroup.com/node/58 Around the world, there is a move toward a International Standard for Acoustics-Audible Emergency Evacuation Signal, also known as a <em>"Temporal-Three, T-3 or Temporal Tone"</em>. The temporal tone is being adopted around the world as the standard evacuation tone pattern and allows for better recognition by all Australians and people from other countries. http://testedgroup.com/node/58#comments News AS1670 AS1851 AS2220 AS4428 Standards Tue, 05 Mar 2002 01:00:00 +1100 webmaster 58 at http://testedgroup.com