AI voices have made it cheap to put a polished, consistent pitch on every call. They have also put those calls squarely inside the oldest rulebook in US telemarketing: the Telephone Consumer Protection Act (TCPA). This guide covers what the rules say about AI voices, where the consent lines sit, and the practical controls a calling team should have in place.
The short answer
Yes, you can use an AI voice on a sales call in the US, but the call is treated as an artificial or prerecorded voice call. That brings consent requirements that do not apply to a call where a human speaks every word. In practice:
- Calling a cell phone or a residential line with an AI voice for telemarketing generally needs the person's prior express written consent.
- Calling-hour limits, do-not-call rules and caller identification rules apply on top of that.
- Each violation can cost $500, and up to $1,500 if it was willful or knowing. Class actions multiply that by every call.
Why AI voices count as "artificial"
In February 2024 the FCC issued a Declaratory Ruling confirming that voices generated by AI are "artificial" voices under the TCPA. The ruling followed AI-generated robocalls that imitated a presidential candidate's voice before the New Hampshire primary. The FCC later fined the consultant behind those calls $6 million, and the carrier that transmitted them agreed to a $1 million settlement.
The ruling matters for ordinary sales teams too. It means an AI voice reading your script is regulated the same way as a prerecorded message, even if the voice sounds natural and even if the script was written by a person.
What if a live agent is on the call?
Many AI-voice tools, Voxa included, keep a human agent on the line who chooses each clip and can take over at any moment. That is better for the customer, but do not assume it takes the call outside the prerecorded-voice rules. Regulators have looked at this model before under the name soundboard technology: an agent plays recorded clips instead of speaking. FTC staff guidance in 2016 and a 2020 ruling from the FCC's Consumer and Governmental Affairs Bureau both treated soundboard calls as prerecorded-message calls, even with a live agent choosing the clips.
The safe planning assumption: if a synthetic or recorded voice speaks on the call, treat the call as a prerecorded-voice call for consent purposes. If you do not have the consent those calls need, have the agent speak every line. In Voxa that is Live mode, which plays nothing into the call.
The consent tiers
| Call type | Line called | What you generally need |
|---|---|---|
| Telemarketing with an AI or prerecorded voice | Cell phone | Prior express written consent |
| Telemarketing with an AI or prerecorded voice | Residential landline | Prior express written consent |
| Informational (non-marketing) call with an AI voice | Cell phone | Prior express consent |
| Live human speaking every word | Any | No TCPA voice consent, but do-not-call and calling-hour rules still apply |
Prior express written consent is a signed agreement (an e-signature or website checkbox that meets the E-SIGN Act works) that clearly authorizes the seller to deliver telemarketing calls using an artificial or prerecorded voice to a specific number. The disclosure must also make clear that agreeing is not a condition of buying anything.
Two points trip teams up:
- Consent is to a seller, not to a list. A lead you bought with a generic "partners may contact you" checkbox is weak ground for AI-voice calls. The FCC adopted a stricter "one-to-one" consent rule in 2023, but a federal appeals court vacated it in January 2025 before it took effect. Courts and regulators still look hard at whether the consumer actually agreed to hear from you.
- Business numbers are not automatically exempt. The residential-line rules do not cover business landlines, but the cell phone rules apply to any wireless number, including a small business owner's mobile.
Rules that apply on every call
Even with perfect consent, these still apply:
- Calling hours. No telephone solicitations before 8am or after 9pm in the called party's local time.
- Identification. A prerecorded or artificial-voice message must state the identity of the business at the start, and give a phone number during or after the message.
- Opt-out. Telemarketing messages with an artificial or prerecorded voice must offer an automated way to opt out, announced at the start of the message. Plan how your call flow handles "stop calling me" before you launch.
- Do-not-call. Scrub against the National Do Not Call Registry for telemarketing to consumers, and keep an internal do-not-call list that you honor across the whole floor. We cover the internal list in detail in our guide to internal do-not-call lists.
- Revocation. Since April 2025, consumers can revoke consent by any reasonable means, including saying so on the call, and you must honor it within 10 business days.
State laws add more. Florida and Oklahoma have their own telephone solicitation acts with separate consent rules and private lawsuits, and several states have rules on AI disclosure. See our guide to AI voice disclosure.
A practical checklist
- Map every campaign to a consent basis. Opt-in web leads with a compliant disclosure can take AI-voice calls. Cold lists should run with agents speaking live.
- Make Live the default for anything without written consent. Switching modes should be one click, and agents should know when to use it.
- Enforce calling hours in the lead's time zone, not the agent's. Hold back leads whose time zone you don't know.
- Put do-not-call enforcement in the dialer, not in a spreadsheet. A request made to one agent must block every agent.
- Never let the voice deny being a machine. If a customer asks "is this a robot?", the honest answer protects you legally and with the customer.
- Keep records. Consent records, do-not-call requests and call logs are your defense if a claim arrives.
How Voxa handles this
Voxa checks your do-not-call list and blacklist before every dial, blocks calls outside an 8am to 9pm window in the lead's own time zone (and holds back leads with no known time zone), and lets any agent switch a call to Live with one click. None of its starter clips deny or deflect being an AI, and an automated test fails if one ever does. Voxa does not scrub the National Do Not Call Registry for you and does not collect consent, so those stay with your lead sources and your process.
This article is general information, not legal advice. TCPA rules change and depend on the facts of each call. Talk to a qualified attorney about your campaigns.