Telemarketing is promoting a particular brand of product through phone. Telemarketing is marketing conducted over the telephone. Most telemarketing calls are "cold calls," meaning the recipient of the call has not requested that the telemarketer contact them. Telemarketing is one of the most controversial types of marketing.

Telemarketing Services facilitate innovative solutions which help greatly in enhancing the overall revenue generation and productivity. Quality performance by the telemarketing service providers can play a vital role in ensuring effective productivity or attaining utmost customer satisfaction.  The purpose of telemarketing is to make a sale. 

The two major categories of telemarketing are Business-to-business and Business-to-consumer.

The following are the sub categories of telemarketing:

• Lead Generation – Involves gathering of information about the prospective customers.
• Sales – Persuade others to buy a product or service
•  Outbound – This is a proactive marketing in which prospective and preexisting customers are    contacted directly.
•  Inbound –This is a reactive reception of incoming orders and requests for information.

Telemarketing is now so widely used that it is now a part of the company offices, the separate call centre build for this purpose or even from the home itself. Telemarketing can be performed using operators or even sometimes through automatically generated recorded messages.

The system of telemarketing involves a series of a minimum of two calls starting from the first call which involves the determination of the customer's need and then the second call which motivates and encourages the customer to move ahead with the deal.