The Do Not Call (DNC) provisions of the Telemarketing Sales Rule (TSR) are as follows:

Internal Do Not Call List Requirements
The internal DNC list refers to the Entity-Specific Do Not Call Provision. This provision mandates that telemarketers keep and maintain their own do not call list, specific to their organization. When a consumer asks to be put on your do not call list, you should honor that request immediately.

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.

Every company engaged in outbound telephone solicitation must maintain an internal Do Not Call (DNC) list. Requests to have a phone number placed on an internal Do Not Call list should be honored immediately and must remain on the list indefinitely, or until the consumer chooses to opt back in. Some states have no limit on how long you must honor an opt-out.