Define telemarketing, and distinguish between outbound and inbound telemarketing

What will be an ideal response?

Telemarketing involves using the telephone to sell directly to consumers and business customers. U.S. marketers spent an estimated $43 billion on telemarketing last year, almost as much as on direct mail. We're all familiar with telephone marketing directed toward consumers, but business-to-business (B-to-B) marketers also use telemarketing extensively. Marketers use outbound telephone marketing to sell directly to consumers and businesses. They also use inbound toll-free numbers to receive orders from television and print ads, direct mail, or catalogs.