> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/using-sipgate/die-sipgate-app/wie-richte-ich-die-browser-erweiterung-in-der-sipgate-app-ein.md).
# How do I set up the browser extension in the sipgate app?
With the free browser extension for the sipgate app, you can dial phone numbers on websites, in emails, or in CRM systems directly by clicking them (click-to-dial).
{% hint style="warning" %}
**Important:** The extension works with both the desktop app and the app in the browser.
{% endhint %}
The extension is available for the following browsers:
* [Google Chrome](https://chromewebstore.google.com/detail/sipgate-app-click2dial/meocbidedjibjdlhfjgplpogklmbhbko)
* [Microsoft Edge](https://microsoftedge.microsoft.com/addons/detail/sipgate-app-click2dial/fbdlfdlmjjigegpaaghlmdndbpeemgob)
* [Mozilla Firefox](https://addons.mozilla.org/de/firefox/addon/sipgate-app-click2dial/)
#### How to install and configure the extension
{% stepper %}
{% step %}
**Open app**
**Open the sipgate app** (in the browser or as a desktop app). Navigate via the gear icon to **settings**.
{% endstep %}
{% step %}
**Open Click2Dial**
Select the section **Advanced**. Under **Click2Dial** you will find the store links for Chrome, Edge, and Firefox.
{% endstep %}
{% step %}
**Install extension**
Click on **Open store** for the desired browser and add the extension. After installation, click-to-dial is ready to use immediately.
{% endstep %}
{% endstepper %}
#### Channel settings
You can choose whether you want to select the desired telephony channel before each call or set a fixed channel permanently (e.g. landline, mobile device, or VoIP phone). You can also make this setting in the **Advanced ➔ Click2Dial** section.
#### Common issues and notes
Issue: Phone number is prefixed with 20 and cannot be reached
Cause: The linked phone number contains spaces in the “tel” link. According to RFC 3966, phone numbers in the link may not contain spaces.
{% hint style="info" %}
**Tip:** Hover over the phone number. The link should look like this: ***tel:+49123456789*** (without spaces).
{% endhint %}
Issue: Cannot make a call from Google Sheets (Google Sheets)
Cause: Google interprets formulas such as =+49800... as a calculation.
**Solution:** Save the phone number as =+498003301000 Double-click the cell with the phone number and then click the sipgate logo to start the call.
**Further notes**
The extension also works with connected CRM systems (e.g. HubSpot or Salesforce), provided that phone numbers there are linked in tel: format.\
Make sure your browser allows pop-ups for sipgate so that the app can start the call.
If you have any questions or problems, please contact sipgate Support.
---
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