Telephony
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Exotel

Connect Exotel to Bolna voice agents for reliable inbound and outbound calling across India. Trusted by enterprises handling high-volume phone operations.

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At a glance

How Exotel 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 Exotel fits in a production voice stack. For full setup steps, credentials, and API details, use the documentation link above.

Overview

Exotel is India's leading cloud telephony platform, it is trusted by thousands of enterprises for mission critical voice communications. With Exotel integration in Bolna, you can leverage out the Exotel's robust Indian infrastructure, carrier relationships, and enterprise grade reliability for your AI voice agents.

Exotel is ideal for Indian enterprises that require high call volumes, strong regulatory compliance, dedicated support, and integration with India's telecom ecosystem.

Features & Use Cases

Highly Reliable
Built for large enterprises, it guarantees 99.9% uptime so your phone lines almost never go down, even during high call volumes.

Excellent Connectivity in India
It has direct partnerships with many major networks like Airtel, Jio, and Vodafone-Idea, ensuring clear and consistent call quality all across India.

Fully Compliant with Rules
Follows all local telecommunication guidelines(like TRAI, DND, and DLT), so you can make business calls safely and legally.

Toll Free Numbers Available
Easily get 1800 and 1860 toll free numbers so that your customers can call you for free.

Secure Call Recording
Safely records and stores your calls so that you can monitor quality and make sure you're meeting all business rules.

Detailed Insights & Analytics
Get clear reports and dashboards that show you exactly how well your calls and support teams are performing.

24/7 Expert Support
Always on customer service with dedicated account managers to help you whenever you need it.

Use Case: Large-Scale Customer Support
Perfect for big companies using AI voice agents that need to handle thousands of calls reliably while following all the rules.

Use Case: Banking & Finance
Safe and secure to handle sensitive customer conversations in the highly regulated financial industry.

Use Case: Healthcare & Consultations
Great for medical industries who need secure, rule compliant phone lines to schedule appointments or talk to patients.

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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 Exotel fits in your production workflow

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