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TAPI_E_MAXTERMINALS
What TAPI_E_MAXTERMINALS means
TAPI_E_MAXTERMINALS The call or stream already has the maximum number of terminals the provider allows.
What to check
- Enumerate terminals currently selected on the affected stream/call.
- Check whether old terminals were not unselected during topology changes.
- Compare the count with the provider’s terminal limits for the media type.
Handling
Release or unselect terminals that are no longer needed before adding another one. If the application truly needs more, use a topology/provider that supports it.
References
- Microsoft: TAPI_E constants — official Microsoft documentation used to interpret the HRESULT.
- Microsoft: TAPI 3.1 Reference
- Microsoft: Telephony API interfaces
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