Error 0x80EE001E

Value: -2131886050 | 0x80EE001E | 2163081246

What does it mean ?

RTC_E_SIP_STACK_SHUTDOWN  
Sip Stack is already shutdown
Value: 30 | 0x001E | 0b0000000000011110

Where does it come from ?

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

Other Errors for FACILITY_RTC_INTERFACE