Telemarketers need knowledge in the following areas:

• Sales and Marketing: The methods for selling products and services.
• Customer and Personal Service: Providing special services to customers based on their needs.
• English Language: The meaning and use of the English language.
• Computers and Electronics: Computer hardware and software.
• Administration and Management: How to run a business or group.
• Communications and Media: How to produce written, spoken or visual media.