Error 0x80EF01E4

Value: -2131820060 | 0x80EF01E4 | 2163147236

What does it mean ?

RTC_E_STATUS_CLIENT_ADDRESS_INCOMPLETE  
Address Incomplete
Value: 484 | 0x01E4 | 0b0000000111100100

Where does it come from ?

FACILITY_SIP_STATUS_CODE  
SIP - Session Initiation Protocol (VoIP)
Value: 239 | 0x0EF | 0b11101111

Other Errors for FACILITY_SIP_STATUS_CODE