A provider language list is a starting point, not proof that an agent understands your customers. Test recognition, response content and spoken output separately using your business vocabulary and consenting test speakers.
Practical checks
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Include names, place names, numbers, dates and language switching in the test set.
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Record misunderstood fields and ask the agent to read them back before submission.
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Set an acceptance threshold for the agreed task, with fallback when confidence or audio quality is insufficient.
What to record before a decision
Write a short decision record: the current problem, one proposed change, the evidence needed to accept it, the person responsible and a review date. Test with fictional data before exposing customer information. If evidence is missing, record it as unknown rather than presenting a forecast as an achieved result. Keep a working fallback so a customer can still reach staff when an integration fails.
Scope and limits
Confirm speech recognition, voice output, language support, telephony and data handling with the chosen providers. Support varies by model and integration. Usage fees and staff review are separate operating costs. Do not promise perfect recognition, a universal response time or a fixed sales uplift.
