> ## Documentation Index
> Fetch the complete documentation index at: https://docs.armin.cx/llms.txt
> Use this file to discover all available pages before exploring further.

# Voice

> Set up an AI voice assistant for phone support.

Voice channels let customers call a phone number and speak with an AI voice assistant. Calls create transcripts and summaries in the inbox.

[Open voice channels](https://armin.cx/app/_/channels/phone)

## Set up a voice channel

<Steps>
  <Step title="Open voice channels">
    [Open voice channels](https://armin.cx/app/_/channels/phone) and click **Add**.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.02.jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=fe33701f47b938152e2a08a72bf98196" alt="Add phone channel button" width="1416" height="340" data-path="images/Bild01.05.25um18.02.jpeg" />
    </Frame>
  </Step>

  <Step title="Name the number">
    Add a display name for the phone number.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.03.jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=0689deddd6684f144ee9d757ecc38db1" alt="Phone number display name setup" width="756" height="614" data-path="images/Bild01.05.25um18.03.jpeg" />
    </Frame>
  </Step>

  <Step title="Choose a phone number">
    Select an available number. If no number appears, search by country code such as `DE` or `+49`.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.03(1).jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=92222dc4f83a7cc90b27a8ebab77db4b" alt="Phone number selection dialog" width="832" height="450" data-path="images/Bild01.05.25um18.03(1).jpeg" />
    </Frame>
  </Step>

  <Step title="Choose the AI agent">
    Select the AI agent and configure the general voice prompt.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.05.jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=b61f588a0174ec9942d1d4dbb84263ce" alt="Voice channel AI agent settings" width="2888" height="1342" data-path="images/Bild01.05.25um18.05.jpeg" />
    </Frame>
  </Step>

  <Step title="Choose the voice">
    Pick the voice and configure speed, latency, and handover behavior.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.06.jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=23c6060d36d5161cc949c3e278530330" alt="Voice selection settings" width="2878" height="1900" data-path="images/Bild01.05.25um18.06.jpeg" />
    </Frame>
  </Step>

  <Step title="Test before going live">
    Test calls, review transcripts, adjust prompts, then set the handover number for human escalation.

    <Frame>
      <img src="https://mintcdn.com/chatarmincom/A54BHt_5VfpG_omm/images/Bild01.05.25um18.08.jpeg?fit=max&auto=format&n=A54BHt_5VfpG_omm&q=85&s=ad879fb5f049a3f9c60f57067fd1cb97" alt="Voice test and transcript view" width="700" height="186" data-path="images/Bild01.05.25um18.08.jpeg" />
    </Frame>
  </Step>
</Steps>

## Fine-tune pronunciation

Add pronunciation rules when the agent mispronounces brand names, acronyms, URLs, or special terms.

<Steps>
  <Step title="Open pronunciation settings">
    Open the voice channel, select the **Voice** tab, and click **Fine-tune pronunciation**.
  </Step>

  <Step title="Choose a rule type">
    Use an **alias** for a simple spoken replacement, such as `CEO` → `Chief Executive Officer`. Use a **phoneme** with IPA notation when you need precise pronunciation.
  </Step>

  <Step title="Save, test, and publish">
    Choose the language, add the rule, test it in a real sentence, and publish the changes.
  </Step>
</Steps>

<Tip>
  Start with aliases. Add language-specific phonemes only when an alias does not sound natural.
</Tip>

## Watch the walkthrough

[Watch the voice assistant setup video](https://www.loom.com/share/991af29645434fbd92fa496404202f0c)