An outbound telemarketing sales operation must combine high-quality sales prospecting, excellent sales and customer service training, and a conducive call center environment to be successful. Generating good sales leads is key and depends on thorough target marketing research to identify the correct prospects. The operation also requires hiring and training employees to represent the company well over the phone with detailed product, sales, and customer service instruction. Ensuring legal compliance, a suitable product or service for telephone sales, targeting actual prospects, and an effective telephone sales force are ultimately what will determine the success of a telemarketing business.