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It uses 32K ADPCM (See pulse-code modulation) as its digitization technique. Xiaolingtong supports many more features than the traditional wired phone system such as high speed wireless Internet connection (32K/64K), Web access, emailing, text messaging and even color image transferring.
China Telecom operates a PAS system in China, even though technically it is not allowed to provide mobile services. The largest vendors of the system are UT Starcom and ZTE .In India, a related system is corDECT, and in Japan, there is a similar system called PHS (Personal Handy-phone System).