Error 0x80040053

Value: -2147221421 | 0x80040053 | 2147745875

What does it mean ?

TAPI_E_PHONENOTOPEN  
The phone is not open.
Value: 83 | 0x0053 | 0b0000000001010011

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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