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Phone Numbers API

Search our extensive inventory for your dream phone number and buy it on the spot using either our API or website. When you purchase a number, it can immediately make and receive phone calls.


Convert Text to Speech and Play Audio

No humans required: your app can talk to callers. Use Twilio's text to speech to read text to your caller. If you have pre-recorded voice prompts or music, just give us the link, and we play the file. We even cache it for instant playback later.


Record Calls and Store Them

Need to save that call for later? Have your app record the entire phone call or prompt a caller to leave a voicemail. Your recordings are stored encrypted on-disk so just leave them with us and grab them whenever you need them.


Create Conferences

Create conference calls on the fly with only one line of code. Launch as many simultaneous conferences as you need and have up to 40 people in any one conference. Select a moderator, chose your hold music, and away you go.


API Queueing

Don't worry about making phone calls too quickly. We'll queue up your outbound calls, if necessary, and make sure that each gets made. Twilio makes it easy for your application to operate at scale without you writing any extra code.


Call Queues

Our built-in queues make it a breeze to manage and route large volumes of inbound phone calls. Place callers in a custom hold pattern as they wait for an agent. Get real-time stats on the number of calls per queue and wait times.

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Convert Speech to Text

Automatically turn audio recordings into text. Twilio can transcribe an audio recording into written words, so that you can display call summaries to users, mine calls for keywords, or build the voicemail system of the future.


Usage API

We store and index your Twilio usage data so you don’t have to. Use our simple REST API to slice and dice usage data by any time interval, over any date-range, and from the most detailed metrics to aggregates. You can even create triggers to notify your application when it crosses usage thresholds.

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Status Callbacks and Logs

We let your app know when a call is ringing, answered, and when the caller has hung up. Use call status to drive dashboards or dynamic application logic. Once the call is over, we keep the call records accessible via the API so that you can generate reports as you need.


Global Reach

Twilio is connected to carriers all over the world so you can make phones ring wherever your users are. No need to maintain lots of carrier connections. Just use the API to make calls and buy phone numbers wherever your business needs.

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