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Introduction

Beyond the prompt and tools, you can customize multiple technical aspects of how your agent handles calls. This configuration allows you to adapt the agent’s behavior to different contexts: adjust speech speed for different audiences, configure reminders to keep users engaged, and set time limits to protect your budget.
Customization ScopeAll these settings apply globally to the agent, regardless of whether you use Single Prompt or Conversational Path mode. You don’t need to adjust them in each node individually.

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Voice Parameters

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Language

Defines the language the agent will understand during the call. The selected language affects both speech recognition and voice synthesis, but not the language model’s text generation. Therefore, it’s essential to indicate the correct language to the agent in the prompt.
Screenshot showing language configuration in the agent panel

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Speech Speed

Controls how fast the agent speaks. This parameter is especially useful for adapting the conversation pace according to your audience.
  • Value range: 0.25 to 2.0
  • Default value: 1.0 (normal speed)

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Inactivity Detection System

The inactivity detection system helps keep the conversation active when the user stops responding. This mechanism is fundamental to avoid long silences that end the call or create a poor experience.

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How it Works

When the user stops speaking for a certain time, the agent sends a reminder message to verify they’re still on the line. If after several reminders there’s no response, the call is automatically terminated.
Flow diagram showing the inactivity detection system with progressive reminders

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Configurable Parameters

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Reminder Messages

Define what phrases the agent will use to check if the user is still on the line. You can define:
  • Fixed messages: A list of specific phrases the agent will use randomly
  • Generated messages: The agent will generate natural messages based on context. This is the recommended approach for a more human experience.

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Reminder Frequency

Defines how often (in milliseconds) the agent should send a reminder if it detects no activity.
  • Default value: 7500 (7.5 seconds)
  • Recommended range: 5000 to 15000 ms
Avoid very low values: Frequencies below 5 seconds can cause the agent to interrupt the user while they’re thinking of their response, creating a frustrating experience.

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Maximum Number of Reminders

Specifies how many reminders the agent will send before ending the call due to inactivity.
  • Default value: 3
  • Recommended range: 2 to 5

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Duration Limits

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Maximum Call Duration

Sets the maximum time a call can last before it’s automatically terminated. Default value: 14400000 (4 hours)