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1·The Bluetooth Special Interest Group (SIG) is the body that oversees the development of Bluetooth standards and the licensing of the Bluetooth technologies and trademarks to manufacturers.

蓝牙特别兴趣小组(SIG)是一个监管蓝牙标准和蓝牙技术和商标的团体。

2·The Bluetooth SDP(Service Discovery Protocol) according to SIG specification, is designed for motion enviroment, and has no definition of carrying out service calling.

SIG规范中的蓝牙服务发现协议是针对运动环境的，对服务调用的实现也未做出规定。