PHONE_CID         594 include/linux/ixjuser.h #define IXJCTL_CID			_IOR ('q', 0xD4, PHONE_CID *)
PHONE_CID         596 include/linux/ixjuser.h #define IXJCTL_CIDCW			_IOW ('q', 0xD9, PHONE_CID *)
PHONE_CID         118 include/linux/telephony.h #define PHONE_RING_START		_IOW ('q', 0x87, PHONE_CID *)