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A call centre (Commonwealth English) or call center (American English) is a centralized office used for the purpose of receiving and transmitting a large volume of requests by telephone.
A call centre is often operated through an extensive open workspace, with work stations that include a computer, a telephone set/headset connected to a telecom switch, and one or more supervisor stations.
Call Centres use a wide variety of different technologies to allow them to manage the large volumes of work that need to be managed by the call centre.