> For the complete documentation index, see [llms.txt](https://help.sipgate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.com/documentation/en/behavior/stimme-and-sprache.md).

# Voice & language

In this section you define how your AI phone assistant sounds and how it speaks with callers. The settings for voice, language, and greeting apply to all conversations of this AI Agent and can be adjusted at any time.

### Select AI Agent language

Choose the language in which your agent should conduct conversations. Available options are: German, English, Spanish, French, Polish, Dutch, Arabic, Turkish, Russian.

The language determines how your agent understands and responds to callers. The agent always replies in the set language, regardless of which language the caller speaks.

{% hint style="info" %}
**Note:** If your company regularly receives calls in different languages, it is recommended to set up a separate agent for each language.
{% endhint %}

<figure><img src="/files/bd924d46976fce183e295e626b3e4c1cef6f3798" alt=""><figcaption></figcaption></figure>

### Choose voice

Choose a voice that fits your company and your target audience. The voice influences how professional and understandable the agent is perceived to be.

#### Recommended voices

There are many voices to choose from. So that you do not have to test them all yourself, our Conversation Experience Team has assessed the voices for clarity, pronunciation, and naturalness, even with more complex content such as numbers, URLs, anglicisms, or spontaneous colloquial speech. These four voices stood out in particular:

| Voice    | Language | Character             |
| -------- | -------- | --------------------- |
| Philipp  | German   | Neutral & reliable    |
| Ramona   | German   | Calm & professional   |
| Benjamin | German   | Efficient & clear     |
| Laura    | German   | Direct & professional |

{% hint style="info" %}
**Note on proper names:** Company names, street names, and technical terms are pronounced differently depending on the voice. Test your agent with a test call before using it. If a voice does not pronounce your company name correctly, switch the voice.
{% endhint %}

#### Monolingual or multilingual?

Choose the voice that sounds most natural for your use cases. Test the desired voice before use with typical conversation scenarios, especially if numbers, proper names, or technical terms occur frequently. Differences are best seen in practical use.

{% hint style="success" icon="envelopes" %}
**Questions or feedback about voices?**

The Conversation Experience Team can help: [**stimmen-feedback@sipgate.de**](mailto:stimmen-feedback@sipgate.de)
{% endhint %}

### Set form of address <a href="#ansprache" id="ansprache"></a>

Decide whether your agent addresses callers with **You (formal)** or **You (informal)** as the form of address.

* **You (formal)** (Formal): suitable for customer service, B2B, and conservative industries
* **You (informal)** (Informal): suitable for modern companies and younger target audiences

The chosen form of address determines only the use of **"Sie"** or **"Du"**. It does not affect the agent's general style of speech. Polite and respectful behavior is stored by default, regardless of the chosen form of address.

The form of address applies to all conversations of this agent and should match your company communication.

### Customize greeting text

You can define the greeting text of your AI Agent individually and adapt it to your company communication.

<figure><img src="/files/61045b90dd82b81402a81132893add5d6324aeec" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
**Important:** The greeting text must include a note that this is a digital service. The text is reproduced verbatim, regardless of the language set.
{% endhint %}

### **Barge-in**

With barge-in, you determine whether callers can interrupt the AI Agent while it is speaking. If the function is active, the agent stops immediately as soon as the caller speaks and listens. This creates more natural conversations and less waiting time.

**Where can I find the setting?**

In the logged-in area under Account Management → AI Agents → Select agent → Agent settings. Depending on the account configuration, the function may need to be activated first. If you have any questions, please contact sipgate customer support.

**What options are available?**

Under interruption, you can choose between two settings:

* **Agent speaks to the end without interruption:** The agent cannot be interrupted while answering and speaks its entire response to the end.
* **Caller can interrupt agent:**
  * As soon as the caller speaks, the agent stops and listens.
  * The greeting message is excluded from this and cannot be interrupted for data protection reasons.
  * If the agent is interrupted, the already generated response remains visible in the transcript, even if it was not spoken in full.

{% hint style="info" %}
**Note:** Barge-in is not enabled by default. To allow callers to interrupt the agent, you must select and save the corresponding option in the agent settings.
{% endhint %}

### Silence response time

The silence response time determines how long the AI Agent waits after the caller has stopped speaking.

It is set by default so that conversations feel as natural as possible. If your agent responds too quickly or too slowly, contact [**customer support**](https://www.sipgate.de/kontakt). The response time can be adjusted if needed.

### Enable background noise (optional)

Background noise, such as office sounds, can optionally be enabled. This setting shapes the atmosphere of the conversation and can create the impression of a real workplace.

### Language of the conversation summary

Specify in which language conversation summaries should be created.

**Example:** Your agent conducts conversations in English, but your team works in German. Set the summary language to German so that all employees can use the logs directly.<br>


---

# Agent Instructions
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