VoIP API to Embed Voice into Web & Mobile Apps

Twilio Client

Building blocks to give your web & mobile apps a voice.

Features

WebRTC

Built-in orchestration of the signaling, media routing, and STUN/TURN services required to provide a seamless WebRTC audio experience. Bridge calls to the PSTN carrier network, SIP endpoints, or to other browser & mobile clients in one line of code.

iOS / Android

Embed voice calling into native apps with Echo Cancellation and Automatic Gain Control (AGC) built in. Leverage the same features used in Voice web apps, from conferencing to intelligent wait queues.

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Global Low Latency

Dynamic call-routing optimization ensures the fastest voice transmission between callers, maintaining low audio latency across 7 data centers globally. As the call dynamically changes and connects, media transport is automatically re-routed.

Voice Insights

See how network and device data affects call quality
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Audio Playback

Play pre-recorded voice prompts and music

Programmable Call Recording

Record and store entire calls or prompt for voicemail
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Transcription

Convert recorded calls into written words

Text-to-speech

Speak text to callers in 26 languages and accents

Call Queues

Build intelligent hold experiences for callers

Usage & Triggers API

Monitor live usage and trigger custom webhooks

Conferencing

Bridge any combination of client, SIP, and PSTN calls

Power Your Business with WebRTC, iOS, and Android

Leading companies trust Twilio to build a high quality call experience

Use Cases

Home Depot

The Home Depot built a global contact center with IVR, Screen Pop, and CRM integration in 8 weeks, allowing in-store shoppers to find home improvement specialists.