Japanese 　About the HATS Forum What's New Introduction of HATS Greetings from HATS A message from Ministry of Internal Affairs Role and Mission of the HATS Forum Secretariat 　HATS Forum Activities What are interoperability tests of telecommunication equipment? necessity of interoperability Major Equipment Tested for Interoperability and number of equipment HATS Forum Activities and Flow of New Product Development Activities of Test Implementation Liaison Committee Guideline interoperability test results 　Demonstration Committee Exhibition 　Relatated Organization, etc "Overview of HATS" Seminar on ITU-T hot topics for Standardization (Mar del Plata, Argentina, 2 September 2009) Result of HATS Interoperability Event on NGN supported by ITU-T Report of HATS Interoperability Workshop on NGN supported by ITU HATS Interoperability event on NGN supported by ITU and APT Why is it necessary to maintain interoperability? If each manufacturer developed their products according to their own protocols, communication between. Their products would be extremely complicated - the more assorted the mix manufacturers, the more complicated it becomes. If the protocols are unified into a specified standard, it is no longer necessary to convert between the various protocols, marking it easier to connect new equipment and expand existing systems. The HATS Forum aims to assure interoperability and facilitate the design of systems and networks.

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