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Voice Robot for Outbound Calls: A Latency Budget from ASR to TTS

A voice robot that confirms appointments can be perfectly accurate and still feel broken. The customer says "yes, I'm coming", then hears nothing for two seconds, says "hello?", and the robot starts…

  • Voice robot latency critical for seamless customer experience
  • Turn latency target of 700 ms or less for natural feel
  • Call path divided into SIP trunk, media server, VAD, ASR, dialog logic, TTS, and RTP stages

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