Inbound call centers mostly rely on Automatic Call Distribution (ACD) and Interactive Voice Response (IVR) technologies that route incoming calls to the most appropriate agents, ensuring customer issues are handled quickly and efficiently. Speech analytics systems are also used in inbound call centers for call quality assurance, agent training, and compliance purposes. Outbound call centers typically use various types of auto dialers, such as predictive dialers, that help improve connection rates, boost agent performance, and increase sales.