Call centers are offices used to make or receive a large volume of inquiries by telephone. Companies have call centers to tackle calls from customers who need help or assistance for the products they have purchased from the company, debt collection telemarketing or even consumer research. Call centers have a number of agents who handle the numerous calls at the same time. Calls are recorded at call centers to ensure accuracy and integrity of services and also to use the calls for training purposes. Call centers offer bespoke packages to service different sectors and services. Call centers employ the latest telecommunications strategies to ensure optimum functionality at all times in different countries and to suit different time zones.