Error 0x80EE0077

Value: -2131885961 | 0x80EE0077 | 2163081335

What does it mean ?

RTC_E_ANOTHER_MEDIA_SESSION_ACTIVE  
Another media session is active
Value: 119 | 0x0077 | 0b0000000001110111

Where does it come from ?

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

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