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Why are WAP-based wireless services in Europe implemented as a circuit switched (dial-up) system while DoCoMos i-mode uses a packet switched system for i-mode?

April 26, 2017circuit dial-up DOCOMO Europe implemented Services system wap-based Wireless

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Why are WAP-based wireless services in Europe implemented as a circuit switched (dial-up) system while DoCoMos i-mode uses a packet switched system for i-mode?

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DoCoMo already had a fully functional packet switched network installed before introducing i-mode. This packet switched network is an overlay over DoCoMo’s circuit switched cellular voice system. European operators do not yet have such a packet switched mobile data network. Therefore, they needed to roll out WAP services on a circuit switched (dial-up) basis. The WAP protocol itself has nothing to do with circuit switching or packet switching. In fact, WAP-based Internet services in Japan are implemented in part on top of a packet switched network architecture.