The Ring.io Power Dialer is one-to-one, which means contacts are dialed one at a time. Related ArticlesHow to use the Power Dialer with the Ring.io Web PhoneHow to use the Ring.io Power Dialer with Zoho CRMHow to use the Ring.io Power Dialer with Salesforce CRMHow to use the Ring.io Power Dialer with Hubspot CRMHow to use the Ring.io Power Dialer with Pipedrive CRM