Learn how to set up dynamic and static call tracking pools to match calls with specific visitors and measure phone call conversions from your campaigns.
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Call tracking lets you connect phone calls to specific visitors and their actions. We create a pool of phone numbers and assign individual numbers to each visitor. When someone calls, Hyros knows exactly who they are and which ads brought them in.
Think of it like giving each visitor their own unique phone number temporarily — so when they call, you know their complete journey: which ad they clicked, which pages they visited, and what actions they took before picking up the phone.
Choose based on where your traffic comes from
How Hyros assigns unique numbers and tracks calls
User clicks your Facebook ad and arrives at your landing page. Hyros tracking script loads in the background.
From your pool (e.g., Pool CA with 805 area code), Hyros picks an available number and assigns it to this specific visitor. The script automatically replaces your default phone number on the page.
Instead of your real number (214-499-5629), visitor sees their assigned tracking number (e.g., 805-457-9727). They don't know it's unique to them — looks like your regular business number.
When they call 805-457-9727, Hyros instantly knows: this is the person who clicked the Facebook ad, visited 3 pages, watched the video, and is now calling.
The call automatically forwards to 214-499-5629 (your actual business line). You answer normally — the visitor never knows they called a tracking number. Hyros logs the call with full attribution.
Understanding dynamic pool sizing for optimal tracking
Enter your traffic data to get a personalized recommendation
What % of visitors actually call?
Follow these steps to create your first call tracking pool
Navigate to: app.hyros.com/settings/tracking/call-tracking
Choose between:
For digital ads and online traffic
For offline campaigns (TV, Radio, Print)
Give it a descriptive name (e.g., "Pool CA" for California, "Pool TX" for Texas)
Choose an area code that matches your target region (805 for California, 915 for Texas, etc.)
Start with 5-10 numbers. Hyros will warn if you need more based on traffic volume.
Enter your real business number where calls should be forwarded (e.g., +1 214-499-5629)
Copy the provided JavaScript and paste it in the <head> section of your website:
<script>
var head = document.head;
var script = document.createElement('script');
script.src = "https://data.carlosaragon.online/v1/lst/universal-script?ph=...";
head.appendChild(script);
</script>Change your phone number HTML to include the hyros-dni class:
<a class="hyros-dni" href="tel:+12144995629">+1 214 499 5629</a>The script will automatically replace this number with the visitor's assigned tracking number.
Name it after the campaign (e.g., "Radio KISS FM" or "TV Commercial Q1")
Choose from available numbers filtered by area code/city. Pick one that matches your market.
Enter your real business number (e.g., +1 214-499-5629)
Under "Assign Source to tracked calls", enter the campaign name. All calls will be attributed to this source.
Display this static number in your TV commercial, radio spot, or print ad. When people call, Hyros tracks it to that campaign.
Enable to record all calls for quality assurance and training
Set to 10 seconds to filter out accidental calls or wrong numbers
Calls longer than this (e.g., 60 seconds) are marked as "qualified" — actual sales conversations
Automatically tag calls based on length. Example: calls > 120 seconds = "Hot Lead"
See dynamic number replacement in action
We've created test landing pages with working call tracking scripts. Visit these pages to see how phone numbers change dynamically for each pool.