AI Voice Agent Development in the USA
We build custom AI voice agents for US businesses that answer and make calls on US numbers, connect to your existing phone system, and follow federal and state calling rules from day one. You own the code.
- years in VoIP
- 9+
- years in VoIP
- clients
- 100+
- clients
- countries served
- 30+
- countries served
- language you need
- Any
- language you need
Quick answer
What does it take to deploy an AI voice agent in the USA?
A US AI voice agent needs US phone numbers on a SIP trunk with STIR/SHAKEN attestation, consent and do-not-call handling for any outbound calls under the TCPA and the FCC's 2024 ruling on AI-generated voices, recording notices that meet state consent laws, and hosting in US regions. CelloIP builds all of this into custom voice agents.
Why a voice agent for the USA needs local design
- Since February 2024 the FCC treats AI-generated voices as “artificial” voices under the TCPA, so outbound AI calls follow the same consent rules as robocalls.
- Call recording consent differs by state: several states require every party to agree, so the agent's opening line and recording settings must allow for that.
- Caller ID authentication (STIR/SHAKEN) affects whether outbound calls show as trusted or get labelled as spam by carriers.
- US callers span many time zones and accents; calling windows and speech models need to reflect that.
Calling and data rules in the USA, and how we build for them
Inbound calls (customers calling you) carry the fewest restrictions. Outbound calls, especially marketing calls, carry the most. These are the rules that shape a US voice agent's design.
| Rule | When it applies | What we build in |
|---|---|---|
| TCPA and the FCC 2024 AI-voice ruling | Outbound calls using an AI-generated voice, especially to mobile numbers and for marketing | Consent records checked before every outbound call, purpose-based campaigns, opt-out handled in the call and honoured immediately |
| Required identification | Artificial or prerecorded voice calls | Opening line names the business, and a callback number or contact is given during the call |
| National and internal do-not-call lists | Telemarketing calls | DNC scrubbing before campaigns, internal do-not-call list updated from the call itself |
| Calling hours | Telemarketing calls (generally 8am–9pm in the called person's local time; some states are stricter) | Per-number time-zone detection and state-specific calling windows |
| State recording-consent laws | Recorded calls, where some states require all-party consent | Recording notice at the start of the call, or recording turned off by state |
| Abandoned-call limits | Predictive and automated outbound dialing | Answering-machine detection and abandonment-rate control on campaigns |
| STIR/SHAKEN | Caller ID on outbound calls | Numbers registered with a carrier that provides full attestation, branded caller ID where available |
This is a summary to plan the build, not legal advice. Your legal or compliance team confirms the rules that apply to your calls.
Numbers, languages and hosting for the USA
US numbers and carriers
- Local and toll-free US numbers on SIP trunks from carriers such as Twilio, Telnyx, Bandwidth or your existing provider
- Connects to Asterisk, FreeSWITCH, hosted PBXs and US contact-centre platforms over SIP
- SMS confirmations sent through registered 10DLC or toll-free messaging
- Warm transfer to your US agents or answering service with a call summary
Languages and accents
- US English tested across regional accents and noisy mobile calls
- Spanish for bilingual lines, with language detection or a menu choice
- Any other language your customers use
- Voice and pacing chosen to suit your brand
US hosting and data
- Agents, recordings and transcripts hosted in US cloud regions or on your servers
- Self-hosted speech and language models when data must not leave your environment
- Healthcare deployments designed around HIPAA requirements, confirmed by your compliance team
- Personal and card data redacted from transcripts
Voice agents we build for businesses in the USA
Healthcare and dental front desk
Appointment booking, reminders and after-hours triage routing, built privacy-first.
Home services
Taking job details, booking windows and routing emergencies to the on-call technician.
Insurance
First notice of loss, policy questions and renewal calls.
Real estate
Lead qualification and viewing bookings around agents' calendars.
Contact centres and BPOs
Tier-1 automation and overflow handling on existing dialers and queues.
Automotive dealers
Service bookings, status calls and passing sales leads to the showroom.
How we work with teams in the USA
Our team is in India (IST). Our evening overlaps with the US East Coast morning, and we schedule regular calls in your working hours. Monitoring and alerting cover US business hours for platforms we run.
How much does an AI voice agent cost?
Typical project ranges by type of build, the same worldwide. You get a fixed quote after a discovery call. Local telephony, speech and model usage and hosting are separate running costs.
| Type of build | Typical scope | Typical range | Timeline |
|---|---|---|---|
| Managed-platform MVP | One use case, one or two languages, calendar or CRM integration | $8,000 – $20,000 | 4–6 weeks |
| Custom production voice agent | Self-hosted, your choice of models, PBX or SIP integration, monitoring | $25,000 – $60,000 | 8–16 weeks |
| Enterprise or regulated deployment | Several languages or use cases, in-country hosting, high concurrency | Scoped after discovery | Agreed in the plan |
Project outcomes and client reviews
Client names and app names are kept private. Reviews are quoted word for word from our Upwork profile.
Project outcome · Custom PBX platform
Built a custom PBX platform handling 1,000+ concurrent channels, 50,000+ extensions and 50,000+ DIDs: the telephony layer our voice agents plug into.
Project outcome · Omnichannel contact centre
Built a contact centre with outbound campaigns, WhatsApp, Instagram, email and SMS in one agent desktop, with SLA rules and ticketing.
“It was a pleasure working with Kaushik and the rest of the knowledgeable team at Celloip. I would highly recommend them for anyone looking for expertise in the VoIP, cellular or mobile application field.”
“Great experience working with Kaushik. He provided valuable insights, quick solutions, and a clear understanding of VoIP infrastructure.”
Frequently asked questions
Are AI voice agents legal in the USA?
Yes. Inbound AI voice agents (customers calling you) are widely used. Outbound calls with an AI-generated voice fall under the TCPA: since the FCC's February 2024 ruling, they are treated as artificial-voice calls, so you generally need prior express consent, and written consent for marketing. State laws can add more rules.
Does the AI agent have to say it is an AI?
AI-voice calls must identify the business making the call, and several states have their own disclosure rules. We recommend the agent always says it is an AI assistant at the start, which also helps callers trust it.
Can it record calls in every state?
Some states require every party's consent to record. The agent can play a recording notice at the start of every call, or recording can be switched off for calls where consent isn't given.
Can it use our existing US numbers and phone system?
Yes. We connect the agent to your current numbers through your PBX, contact-centre platform or SIP trunk, so you can send it only after-hours or overflow calls at first.
How do you keep outbound AI calls from being flagged as spam?
Use numbers with full STIR/SHAKEN attestation from a reputable carrier, register them for branded caller ID where available, keep call volumes and patterns reasonable, and only call people who have agreed to be called.
How much does an AI voice agent cost for a US business?
As a guide, a managed-platform MVP is typically $8,000–$20,000 over 4–6 weeks and a custom production agent $25,000–$60,000 over 8–16 weeks. Enterprise and regulated deployments are scoped after discovery. Telephony, speech and model usage are separate running costs.
Related guides and services
Regions: UK · India · UAE|Languages: Arabic · Hebrew · Multilingual
Plan your voice agent for the USA
Tell us about your calls, your phone system and the languages you need. We'll reply with an approach that fits local rules, a timeline and a fixed quote.
Contact CelloIP