Tropo is part of CiscoLearn More

How It Works

Tropo makes it easy to add capabilities like calls, text messages, and conferences into any application or business process. Use the web technologies you already know and Tropo’s powerful cloud APIs to automate communications without needing to install software, bear up-front costs, or handle long-term maintenance.

Tropo is free while testing your code.

Powerful Scripting

Add communications features to your app with just a few lines of code.

var message ='Hello World';

Included Features

Phone numbers around the world

Grow you application globally by giving it phone numbers in 41 countries. Going big was never so easy.


Tropo applications can join multiple callers into multi-party conferences and add advanced features including recording and SIP.

speech recognititon

Automatic Speech Recognition (ASR) in 24 languages allowing callers to use either touchtone or their voice to answer prompts during the call. Tropo supports four forms of speech recognition grammars including Simple Grammars, GrXML, JSGF and ABNF.

Text to speech

Tropo supports text to speech (TTS) in 32 languages and dialects, in both male and female voices, including: English (U.S., British and Australian), Spanish (Castilian, Argentine, Chilean and Mexican), Mandarin Chinese, French and more.


Have recorded audio from calls automatically transcribed and posted to your server or via email in seconds.

Call Recording

Need to record a call or just a part of it? Tell Tropo what to record and post recordings to the storage location of your choice.

Text messaging

Automate text messaging with Tropo and your application can exchange messages with mobile devices all over the world.