The main provisions of the Telephone Consumer Protection Act (TCPA) are as follows:

Calling Time Restrictions
Companies can contact residential consumers only between 8:00 AM and 9:00 PM (recipient’s time zone).

Automatic Telephone Dialing Systems (ATDS)
The TCPA restricts autodialed marketing calls and texts to cell phones and other devices where the recipient might be charged for the call without written consent, and non-marketing autodialed calls without prior express consent.

Robocalls
The TCPA does not allow the use of an artificial or prerecorded voice to be used to call a residential landline or wireless number for marketing purposes without prior express written consent.

Identification Requirements
Among other things, the TCPA requires the caller to provide their name, the name of the company on whose behalf they are calling, and a telephone number or address which can be used to contact them again.

National Do Not Call (DNC) Registry
Telemarketers are required to suppress phone numbers on the National Do Not Call Registry. Remember that some states have their own local DNC lists as well, separate from the federal list.

Internal Do Not Call List
Companies are required to maintain an internal DNC list of consumers who asked not to be called or texted.