Skip to content
← Back to Glossary
Telephony

Twilio

Definition

Twilio is a cloud communications platform that provides programmable voice, SMS, and telephony APIs. Many voice AI stacks use Twilio or similar carriers for phone numbers and call connectivity.

Why it matters

Twilio-style carriers supply the phone numbers and connectivity that let AI agents place and receive real calls.

Frequently asked questions

How is Twilio used on a real phone call?

On a live call, Twilio shows up in the moments that decide whether a caller books, waits, or hangs up. It sits in the Telephony layer of the voice stack and works alongside Telephony, VoIP, PSTN — evaluate it on real calls with background noise and interruptions before trusting it in production.

Why does Twilio matter for AI voice agents?

Twilio-style carriers supply the phone numbers and connectivity that let AI agents place and receive real calls. In practice, teams confirm it in the first weeks of Telephony review: when bookings hold and handoffs stay clean, the deployment is earning its keep.

How is Twilio used in AI phone call automation?

In AI phone call automation, Twilio is part of the Telephony foundation. It connects closely to related concepts like Telephony, VoIP, PSTN, which together shape how a voice agent understands callers and completes real tasks such as booking appointments and qualifying leads.

Related Terms

Sources

Definitions and claims on this page are grounded in the following authoritative external references.

Put Voice AI to Work for Your Agency

Understanding the terminology is the first step. Launching a branded voice AI practice is the next. Fusion Calling helps agencies go live in 24 hours, with multi-provider support, done-with-you onboarding, and full brand ownership.

Explore the Partner Program

Just researching? See AI phone call automation, end to end.

Let's Build
Next Gen AI Voice Agents
Together

Try Our Demo