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Call center

A company, or department of a company, that offers operator-supported voice services. A large number of operators handle inbound calls via a hotline and/or outbound calls as part of a direct marketing campaign.


CAPEX  In financial accounting, the term Capital Expenditure (CAPEX ) refers to investments in plant and systems. These include investments made to maintain existing plant. CAPEX  must be posted to the asset account (capitalized).

Carbon footprint

Describes the total of all greenhouse gases that are emitted directly or indirectly within a defined period. A carbon footprint can be calculated for a company, an individual or the life cycle of a product. All relevant emissions, from raw materials extraction to disposal, are included in these calculations.

CDP (Carbon Disclosure Project)

The Carbon Disclosure Project (CDP) is an initiative involving more than 534 institutional investors with total investment assets of USD 57 billion (as of June 2010). The CDP would like to promote dialog between investors and companies on climate change issues. Currently, some 2,500 of the world's largest companies are involved in the project and provide information on their greenhouse gas emissions and climate protection strategies. The CDP collects and publishes the data on an annual basis.


CeBIT  (German acronym for Center for Office Automation, Information Technology and Telecommunications) is the world's largest ICT trade fair and takes place annually in Hanover, Germany.

Cloud computing

Cloud computing  describes the use of external IT infrastructures such as computers, memories or networks and software such as operating systems or management tools.

CO2 equivalents

CO2 equivalents (CO2e) indicate the greenhouse gas potential of various climate-damaging gases and clarify how much a specific quantity of a greenhouse gas contributes to the greenhouse effect. The reference value used here is carbon dioxide (CO2).

Connected life and work

The convenient management of all personal data and Internet services on any screen, whether PC, cell phone or television. This is based on the secure online storage of data, making it accessible by all devices via broadband networks.


COP  stands for the Conference of the Parties that is held annually under the UN Framework Convention on Climate Change. The 16th UN Climate Conference (COP  16) took place in Cancún in November/December 2010. The 17th UN Climate Conference (COP17) was held in Durban in November/December 2011.

Corporate giving

Corporate giving  refers to financial donations made by the company to social or ecological projects.

Corporate Volunteering

Corporate volunteering describes the voluntary efforts of a company's employees in the social or ecological domain that are promoted by the employer.

Critical energy infrastructure

The term "critical energy infrastructure" refers to networks, services and facilities whose interruption or destruction would have serious effects on the health, safety, security or economic well-being of the people in a region or state.

Cyber mobbing

This term describes harassing, hassling or threatening people on the Internet – especially in chat rooms, in e-mails or instant messages – or over cell phone.