Aircall AI voice agents from your call flow
An Aircall Smartflows step redirects callers to a Cartesia agent's number, and the agent answers routine questions and hands the rest back to your teams.
Front-line agent
Answers calls your Aircall flow redirects and passes the rest to your team.
Instructions
Answer support hours and common how-to questions. Transfer account changes and billing to the account team's Aircall number, and named requests to that person's number.
- Handoff
- Aircall team number
Connected tools
- Transfer to AircallTransfer
What a Aircall AI voice agent can do
Open one to watch a call. The grey lines are the tools the agent calls mid-sentence.
A Redirect to step in Smartflows sends callers to the agent's number, right away or after a team's Ring to step goes unanswered.
The agent answers questions from its instructions, such as support hours or how to reset a password, and ends the call itself.
Callers who ask for a person go to an Aircall number whose call flow rings the right team or user.
Aircall settings
These are the Smartflows settings for sending callers to the agent.
- Where
- Smartflows call flow editor for the number, +, then Redirect to.
- Destination
- External number, with the agent's number in Ring to.
- Order
- Redirect to ends the call flow, so widgets after it don't run.
- Overflow
- A Ring to step for a team first, then Redirect to the agent.
Set it up
A phone hand-off. A Smartflows Redirect to step sends callers to the agent's number. There is no SIP trunk between Aircall and Cartesia. Vendor details read in November 2026.
Give the agent a number
Import a number from Twilio or connect a SIP trunk number. Transfers work only on Twilio and SIP trunk numbers, not on Cartesia numbers.
Open the number's call flow
Open the Smartflows call flow editor for the number and click + at the point where the agent should take over.
Redirect to the agent
Add the Redirect to widget, choose External number, enter the agent's number in Ring to, and click Publish. For overflow, place it after a Ring to step for a team.
Set the way back and test
Add a transfer rule in Cartesia to an Aircall number that reaches a team or user. Call the number, reach the agent, and ask for a person.
Before you build
Skip per-user forwarding
Forward call to an external number asks whoever answers to press 1 within 10 seconds, and only Aircall Support can turn that off. Use the call flow route.
Anonymous callers get a placeholder
When an anonymous caller is redirected to an external number, Aircall shows +266696687 as the caller. Tell the agent not to treat it as a real number.
Check how the leg is billed
Aircall bills answered per-user forwards as outbound calls. Its call flow docs don't say how a redirect to an external number is billed, so check your plan.
Transfers are cold
The person who picks up gets the call, not the conversation. Have the agent tell the caller where it's sending them before it transfers.
Use cases for teams on Aircall
More integrations
Enterprise-grade security
HIPAA compliant
SOC 2 Type 2
GDPR
Aircall AI voice agent FAQs
Does Aircall have an AI voice agent?
Yes. Aircall's AI Voice Agent answers questions on Aircall numbers, collects caller details, covers calls when nobody is free and escalates to your team. To use a Cartesia agent instead, a Smartflows Redirect to step sends callers to the agent's phone number. That is a phone hand-off, and Aircall has no built-in Cartesia connection.
Can I use my own AI agent with Aircall?
Yes, if the agent has its own phone number. A Redirect to widget in Smartflows sends callers to it as an External number, and the agent transfers callers back to an Aircall number for a team or user. A Cartesia agent calls webhook tools you define in your own systems and uses the voice and model you choose.
How do I forward Aircall calls to an AI agent?
Use Smartflows, not per-user forwarding. Open the number's call flow in the Smartflows editor, click + where the agent should take over, add Redirect to, choose External number, and enter the agent's number in Ring to. Then click Publish. Per-user forwarding asks whoever answers to press 1 within 10 seconds, and only Aircall Support can turn that off.
Can the agent take only calls my team misses?
Yes. Put a Ring to step for the team first and a Redirect to step for the agent after it, so the agent answers only when nobody on the team picks up. Redirect to ends the call flow, so place any widgets you need before it.
What caller ID does the agent get from Aircall?
Anonymous callers arrive as +266696687. Aircall uses that placeholder when it redirects an anonymous call to an external number, so tell the agent not to look up or call back that number.
Who bills the minutes on an Aircall redirect?
Cartesia charges $0.03/min, plus LLM usage and telephony, and Twilio or your SIP carrier bills the agent's number. Aircall bills answered per-user forwards as outbound calls, but its call flow docs don't say how a Redirect to an external number is billed, so check your plan.
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