HSP_SPEC_V12.pdf
ThisprofiledefinestherequirementsforBluetooth®devicesnecessarytosupporttheHeadsetusecase.Therequirementsareexpressedintermsofend-userservices,andbydefiningthefeaturesandproceduresthatarerequiredforinteroperabilitybetweenBluetoothdevicesintheHeadsetusecase.
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HSP老版的协议，还可以看。