Description: Module release all Bluetooth connections with remote device then reboot
2.1.17. Restore Factory Settings
Description: Module restore all factory settings then reboot
2.1.18. Mute/Unmute Microphone
Format: AT+MICMUTE{=Param}
Param: Mute (0/1, default:0)
Description: Only used for temporary mute/unmute microphone while call active
2.1.19. Read/Write Music Volume Level
Format: AT+SPKVOL{=Param}
Param: Volume (0~15, default:14)
Description: Set a2dp streaming volume level
2.2. HFP Commands
2.2.1. Read/Write HFP Configuration
Format: AT+HFPCFG{=Param}