A call center is a centralized office used for receiving or transmitting a large volume of telephone calls. Companies often use call centers to handle customer service inquiries, technical support, and sales. They can be operated in-house or outsourced to third-party service providers. Call centers typically employ agents who are trained to assist customers with their needs. These agents use telecommunication technology to manage calls efficiently. Many call centers also utilize customer relationship management (CRM) software to track interactions and improve service quality.