Call centers handle outbound cold calling and inbound service calls.  Inbound calls are channeled to various call centers for certain types of  projects.

For example;

lead generation -  when a customer calls for information about a business service, a call center telemarketer can receive the call and refer it as a lead for sales follow-up.

qualification - businesses like leads that are reliable and qualified as good prospects, which call centers can check out and refer.

appointment setting - if a caller is interested in learning more about a product, or wants to have someone call on them, the call center can set up an appointment.

order taking - many phone numbers that appear in print or TV ads direct the call to a call center, which can place an order for the caller.

It’s easy to use call centers for projects like these, where a customer needs immediate service.  A business can refer the entire project to a call center service to handle these customer needs.