A call centre is often operated through an extensive open workspace for call centre agents, with work stations that include a computer for each agent, a telephone set/headset connected to a telecom switch, and one or more supervisor stations. It can be independently operated or networked with additional centres, often linked to a corporate computer network, including mainframes, microcomputers and LANs. Increasingly, the voice and data pathways into the centre are linked through a set of new technologies called computer telephony integration (CTI).

Most major businesses use call centres to interact with their customers. Examples include utility companies, mail order catalogue firms, and customer support for computer hardware and software. Some businesses even service internal functions through call centres. Examples of this include help desks and sales support.

Call centre technology

Call centre technology is subject to improvements and innovations. Some of these technologies include speech recognition and speech synthesis software to allow computers to handle first level of customer support, text mining and natural language processing to allow better customer handling, agent training by automatic mining of best practices from past interactions, and many other technologies to improve agent productivity and customer satisfaction. Automatic lead selection or lead stearing is also intended to improve efficiencies, both for inbound and outbound campaigns, whereby inbound calls are intended to quickly land with the appropriate agent to handle the task, whilst minimising wait times and long lists of irrelevant options for people calling in, as well as for outbound calls, where lead selection allows management to designate what type of leads go to which agent based on factors including skill, socio-economic factors and past performance and percentage likelihood of closing a sale per lead. The concept of the Universal Queue standardises the processing of communications across multiple technologies such as fax, phone, and email.

Patents

There are a large number of patents covering various aspects of call centre operation, automation, and technology. One of the early inventors in this field, Ronald A. Katz, personally holds over 50 patents covering inventions related to toll free numbers, automated attendant, automated call distribution, voice response unit, computer telephone integration and speech recognition..

Call centre dynamics

Call centre staff are often organised into a multi-tier support system for a more efficient handling of calls. The first tier in such a model consists of operators, who direct inquiries to the appropriate department and provide general directory information. If a caller requires more assistance, the call is forwarded to the second tier, where most issues can be resolved. In some cases, there may be three or more tiers of support staff. If a caller requires more assistance, the caller is forwarded to the third tier of support; typically the third tier of support is formed by product engineers/developers or highly skilled technical support staff of the product.