What is the difference between inbound and outbound call centers?

Inbound and outbound call centers differ in the direction and purpose of customer interactions. Inbound call centers handle incoming calls from customers, typically for support, service, or issue resolution. Outbound call centers place calls to prospects or customers for sales, collections, or proactive outreach. Inbound operations are focused on responsiveness, resolution, and customer experience, while outbound operations prioritize efficiency, contact rates, and conversion outcomes. Many organizations use a blended model that combines both approaches.