Occasionally, a caller might misdial a phone number and end up calling a tracking number from your pool, without actually being on your website. In this scenario, there is no website visitor to attribute that callers source, the call is reported without a source attribution.
It's important to note that every call, tracked or not that passes through one of your tracking numbers will be reported.
If you find that a high number of calls are being reported without a source attribution, please follow the checklist below to identify the cause;
Check that a tracking number in a pool hasn't inadvertently been used as a static number somewhere on the site.
It is very important that in a website tracking scenario, the pool numbers are absolutely NOT used as static numbers somewhere on the site. The call tracking platform contains a very complex algorithm which manages the effective leasing and tracking of each individual tracking number in your pool across visitors and visitor behaviours on your website. Using a tracking number from your pool in a static environment will cause calls to be attributed with incorrect data or no attribution data at all.
We see this often where web developers create new pages or make changes to existing pages without realising there is a call tracking system implemented, and they simply use the phone number they see on the site (a tracking number!) as the phone number.
Ensure that you have not used a pool number on a static advertisement, banner, print media etc.
Following on from item 1 above, if you've used a website tracking pool number in a static advertisement, the best course of action is to create a new offline pool (a pool with a single number and no website data) specifically for that advertisement, then remove the number from the website tracking pool and re-add it to the new offline pool you have created. This will allow you to independently track the success of the offline media as well. You'll need to replace that number in the web site pool by ordering a new number, which you can do in real-time by clicking the 'Orders' button in your control panel.
Ensure that you have at least one tracking source enabled in the Pool configuration.
Have you turned off your tracking? Ensure that you Pool configuration has at least one call tracking source enabled (eg Organic, Direct, Paid Search, Referral..)
If you've made any adjustments to fix the points above, you should see the calls with no attribution stop coming in almost immediately if your fix has been successful.