Customer context: The customer handles calls in several languages and wants to know whether a transcription language has to be configured per phone number or per department.
Customer question: Do I need to set the language of the call for transcription to work?
Solution: No. There is no language setting for call transcription - the only setting is the "Enable call transcription" checkbox in Configuration > Call > Settings. The transcription is handled by OpenAI's Whisper speech-to-text model, which recognizes the spoken language on its own and returns the text together with the language it detected; when the language was identified, it is displayed next to the transcript in the ticket. This means calls in different languages are all covered by the same setup, with no per-number or per-department configuration. If the audio quality is poor or a call switches between languages, the detected language may be less accurate, but that does not prevent the transcript itself from being generated.