Millis AI’s Session Continuation feature enables agents to leverage previous interaction data, allowing users to continue conversations seamlessly from prior sessions. By passing a session_id, agents can access past context, enhancing engagement and providing a personalized experience for users.

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Important Note on Data Opt-Out

Warning: Session Continuation is only available if Data Opt-Out is disabled. When Data Opt-Out is enabled, Millis does not retain call history, so agent can’t retrieve data from previous sessions. Ensure that Data Opt-Out is disabled if you require session continuation for your users.

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How to Pass session_id for Session Continuation

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1. Web SDK Integration

To enable session continuation using the Millis Web SDK, use the msClient.start method:

msClient.start({
  agent: {
    agent_id: agentId
  },
  session_continuation: {
    session_id: "<previous session id>"
  }
});

Make sure you upgrade your web sdk to v1.0.15 to have this option.

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2. Native Integration via WebSocket

To continue a session via WebSocket, include the session_id in the initiate event:

{
  "method": "initiate",
  "data": {
    "agent": {
      "agent_id": "your_agent_id",
      // or for dynamic configuration
      "agent_config": "<config>"
    },
    "public_key": "your_public_key",
    "metadata": {
      "key": "value"
    },
    "include_metadata_in_prompt": true,
    "session_continuation": {
      "session_id": "<previous session id>"
    }
  }
}

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3. Outbound Call API Integration

For outbound calls, the session_id is included in the request body when calling the start_outbound_call API.

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Example Request

{
  "from_phone": "your_agent_phone_number",
  "to_phone": "receiver_phone_number",
  "metadata": {
    "key": "value"
  },
  "include_metadata_in_prompt": true,
  "session_continuation": {
    "session_id": "<previous session id>"
  }
}

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Example Scenarios

  1. Follow-Up Customer Support Calls: A returning customer can pick up from a previous conversation by including the session_id, reducing the need to re-explain their issue.
  2. Ongoing Campaigns: In multi-stage campaigns, session_id helps track each caller’s journey, creating a more cohesive experience.
  3. Consultations: Advisors can use session continuation to reference past discussions, fostering a more personalized relationship.

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Future Enhancements

  • User Identification: Upcoming features will allow sessions to continue based on user_id, phone, or similar identifiers, adding memory across sessions without requiring a session_id.
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