Telemarketing is one way that businesses can advertise their products and offer their services.
They will often use professional telemarketers or call centres to make unsolicited telephone calls and send faxes to potential customers on their behalf. To generate funds, charitable organizations will sometimes contact potential donors directly or through a telemarketing firm using unsolicited telephone calls or faxes. They may be used alone or with other equipment to send a pre-recorded or synthesized voice message to the telephone number called. ADAD calls are permitted when there is no attempt to sell, such as calls for public service reasons, emergency purposes, calls to collect overdue accounts, market or survey research calls or calls to schedule appointments.