Why are some of my calls failing in Eazylio while others go through?

Answer:

The issue usually lies with Twilio or external telecom providers. Eazylio handles call routing, but Twilio manages the actual connection. Failed calls can result from issues such as your Twilio number being flagged as spam, telecom-specific restrictions, or incorrect geo permissions in Twilio’s settings.

For more details on the root causes, check out this guide on failed calls.