Error 0x80EF012C

Value: -2131820244 | 0x80EF012C | 2163147052

What does it mean ?

RTC_E_STATUS_REDIRECT_MULTIPLE_CHOICES  
Multiple Choices
Value: 300 | 0x012C | 0b0000000100101100

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