Error 0x80EF012F

Value: -2131820241 | 0x80EF012F | 2163147055

What does it mean ?

RTC_E_STATUS_REDIRECT_SEE_OTHER  
See Other
Value: 303 | 0x012F | 0b0000000100101111

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