Error 0x80EF0195

Value: -2131820139 | 0x80EF0195 | 2163147157

What does it mean ?

RTC_E_STATUS_CLIENT_METHOD_NOT_ALLOWED  
Method Not Allowed
Value: 405 | 0x0195 | 0b0000000110010101

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