Telephony
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Twilio

Connect Twilio to Bolna for global phone coverage. Spin up local numbers in 100+ countries and route inbound or outbound calls to your AI voice agents.

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At a glance

How Twilio fits in the stack

Best for

Making and receiving real phone calls at production scale.

Use this layer when

You need numbers, trunking, call routing, or carrier control.

Connects to

STT, LLM, TTS, and workflow actions inside the live call.

Voice Stack

Telephony is the calling layer

Telephony is the calling layer

This provider connects Bolna to the phone network. It controls how calls start, where they route, which numbers you use, and how the audio enters your agent pipeline.

TelephonyPhone Network
STTListener
LLMReasoning
TTSVoice
ToolsActions

This page focuses on where Twilio fits in a production voice stack. For full setup steps, credentials, and API details, use the documentation link above.

Overview

Twilio is the world's leading cloud communications platform, providing reliable voice connectivity across 100+ countries. Bolna's Twilio integration enables you to handle both inbound and outbound phone calls with AI powered voice agents, using Twilio's robust global telephony infrastructure.

With this integration, you can purchase phone numbers, configure call routing, and connect your Bolna agents to handle thousands of concurrent calls with enterprise-grade reliability.

Features & Use Cases

Worldwide Phone Numbers
Easily buy local phone numbers in over 100 different countries so your business always feels local to your customers.

Answer Incoming Calls
Automatically send all your incoming calls straight to your AI agents to handle support, book appointments, or qualify leads.

Make Outgoing Calls
Have your AI agents automatically call people for sales, appointment reminders, collecting payments, or conducting surveys.

Automatic Call Recording
Safely record and save every single phone call so you can easily review them later for quality and training.

Clear Call Insights
Get easy to read reports that show exactly how long your calls take and how well your AI agents are performing.

Handles Any Call Volume
Whether you have ten calls a day or thousands all at once, Twilio's powerful system never slows down or drops the ball.

Understands Keypad Presses
Your AI agents can understand when a caller presses numbers on their phone keypad, which is perfect for menus or collecting account numbers.

Browse this layer

Keep exploring the voice stack

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Telephony

Telephony providers connect your voice agents to the phone network so they can make and receive real calls. Bolna supports managed integrations with major carriers as well as bring-your-own-carrier via SIP trunking, giving you full control over call routing, number provisioning, and cost.

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Large Language Models

The LLM is the brain of your voice agent. It understands what callers say and decides how to respond. Bolna lets you swap between models like GPT-4o, Claude, and DeepSeek without changing your agent configuration, so you can optimize for speed, cost, or reasoning depth.

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Speech-to-Text

Speech-to-text converts what callers say into text that your LLM can process. Transcription accuracy and latency directly affect how natural a conversation feels. Bolna supports streaming STT providers optimized for telephony audio, including specialized models for Indian languages.

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Text-to-Speech

Text-to-speech turns your agent responses into spoken audio. Voice quality shapes how callers perceive your brand. Flat, robotic speech kills trust while natural, expressive voices build it. Bolna integrates with the fastest TTS providers so responses sound human and arrive without awkward pauses.

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Tools & Workflows

Tools let your voice agents take action during a call, not just talk. Book a calendar slot, look up an order in Shopify, push a lead into your CRM, or trigger a multi-step automation in Zapier. These integrations turn voice agents from answering machines into workflow engines.

See where Twilio fits in your production workflow

Use the demo to walk through provider selection, stack tradeoffs, and the exact workflow you want Bolna to automate.