Tracking numbers with UTM parameters

There may be times when you want to track calls from campaigns with specific UTM parameters. In this case, you will need to link the tracking number with the UTMs you wish to track. 

Doing so, is straightforward. Let's see how you can do it.

Step 1. Go to Data Tools > Sources.

Step 2. Click on the '+ Add custom source' button on the top right.

Step 3. Select the 'Custom Parameters' option from the tracking source type menu and click on 'Next'.

Step 4. Insert any name and utm_source, medium, campaign, app, term, and/or referrer domain details you desire. Make sure your input maintains the same format as it has on the URL, and that it's tied to the campaign you wish to track. Then click on 'Save' at the bottom right of the screen.

Step 5. Go to Tracking > Numbers and find the number you want. Then, click on the dropdown menu under 'Source'. Find your custom parameter and click on it.

If you wish to change the UTM parameters at any given point in time, simply go back to Data Tools > Sources, find your custom parameter, and edit it. Make your changes and hit the 'Save' button.

And you are done! Now your numbers is all set and ready to go.

Updated on: 24/07/2025