The general discoverable mode shall be used by devices that need to be discoverable continuously or for no specific condition. Device is 'discoverable' or in 'discoverable mode'. With respect to paging, a Bluetooth device shall be either in non-connectable mode or in connectable mode. When a Bluetooth device is in non-connectable mode it does not respond to paging. When a Bluetooth device is in connectable mode it responds to paging.
Device is 'connectable' or in 'connectable mode'.
With respect to pairing, a Bluetooth device shall be either in non-pairable mode or in pairable mode. The device that initiates authentication has to be in security mode 2 or in security mode 3. Also devices in limited discoverable mode will be discovered using general inquiry. The general inquiry should be used by devices that need to discover devices that are made discoverable continuously or for no specific condition. The purpose of the limited inquiry procedure is to provide the initiator with the Bluetooth device address, clock, Class of Device and used page scan mode of limited discoverable devices.