Error 0x80EE0010

Value: -2131886064 | 0x80EE0010 | 2163081232

What does it mean ?

RTC_E_SIP_AUTH_TYPE_NOT_SUPPORTED  
The Authentication type requested is not supported
Value: 16 | 0x0010 | 0b0000000000010000

Where does it come from ?

FACILITY_RTC_INTERFACE  
RTC - Real-time Communications
Value: 238 | 0x0EE | 0b11101110

Other Errors for FACILITY_RTC_INTERFACE