With Tropo you can build nearly any voice application you can imagine, including speech-driven IVR, VoIP solutions and voice mashups. The code you write also works over SMS, IM, and Twitter. One click, add an IM or Twitter ID, and your application begins responding over those channels. Check out our documentation and sample apps at: http://tropo.com/docs
How much does it cost to use Tropo?
Tropo is 100% free for developer usage. Once you're ready to move your application to production, you pay a low per-minute rate for voice and a per message rate for SMS. There are no contracts, no set-up fees and you only pay for what you use. Premium features such as speech recognition, speech synthesis and call recording are included at no extra cost. Specific pricing can be found on our pricing page.
How long will the free trial last?
Tropo is always free for developer use, it's not a limited time offer. Keep your application in development as long as you need to, without having to worry about time limits or eating up usage credits.
How do I register for Tropo?
It’s extremely easy. Go to www.tropo.com and click on the "Join Now" button. In less than a minute, you’ll have access to everything you need to create applications, including free file hosting and phone numbers.
What countries are numbers available in?
We offer toll free and local numbers in the US, and local numbers in 40 other countries: Australia, Austria, Belgium, Brazil, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, Ireland, Israel, Italy, Japan, Latvia, Lithuania, Luxembourg, Malta, Mexico, Netherlands, New Zealand, Norway, Panama, Peru, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom.
Are there sample apps I can look at to help me build my application?
With your favorite FTP client. Connect to ftp://ftp.tropo.com using your Tropo username and password
What is the best way to create audio files for use with Tropo?
The Tropo platform supports a number of different audio formats. When converting your sound files for optimum performance in your application, it is always best to have your files in 8bit, 8Khz u-law format from the start. For more, please refer to this blogpost.
Why did you choose to support Ruby, Groovy, PHP, JavaScript and Python?
We had to start somewhere - when we took a look at the language landscape for web developers, these five seemed to be a great starting point. Want to use a different language? Our WebAPI can be used with any language you can run on your server.
What is Tropo built on?
Tropo is built on Java standards including SIP Servlets/JSR 289 and Java Scripting/JSR 223. This allows us to deploy the Java implementation of each scripting language that we make available. The list of the implementations are:
All of this is running on Voxeo's carrier-grade infrastructure, managed around the clock by our Customer Obsession Teams.
What libraries can I use with Tropo?
With Tropo WebAPI, you host your own code, so you can use any libraries available on your server. With Tropo Scripting API, you can use most all of the "standard" libraries provided with that language's Java implementation as well as the Java API available in the JDK. We've restricted a few of them that may have security implications for our platform, but for the most part the full range of language libraries are available. You can see some of those libraries in use in the sample applications available at http://docs.tropo.com/ or http://github.com/voxeo/
We will continue to evaluate the inclusion of additional custom libraries in each scripting languages, such as additional Python Eggs or Ruby Gems. Until then, the Java API is also available.
Can I call the underlying Java API from my script?
Yes, it is possible to access the Java API available in JDK 6. The standard Java API is available on Tropo. For more information on accessing the Java API from your scripting language please refer to:
Curl is a C library available on many operating systems. Many of the C implementations of scripting languages such as PHP make a Curl library available. Tropo uses the Java implementation of each scripting language, therefore any libraries only available in C are not supported by the respective Java implementation of that language on Tropo. Some languages, like PHP, have implemented curl in Java. For these languages, all of the curl features are available.
We recommend that when a certain library is not available, that the Java API be used from the scripting language.
How can I get involved with the Tropo developer community?
Join our forums, hop into the #tropo IRC channel, or follow us on Twitter as @tropo. And as always, watch the Tropo blog to stay up on how you can connect to the Tropo community.
What is Voxeo’s involvement in Tropo?
Tropo is a new service offered by Voxeo and runs on Voxeo's rock-solid, fault-tolerant network infrastructure.
Does Voxeo still support XML-based programming?
Absolutely. Voxeo continues to provide the world's best and most standards-compliant VoiceXML and CCXML platform - and we will continue to support and invest in that platform. We are very involved in the efforts around VoiceXML 3 and continue to chair the CCXML activities within the W3C. XML-based telephony isn't going away - in fact it is getting stronger within the enterprise world. We look forward to continuing to help customers develop and deploy XML-based applications for may years to come.
Tropo opens up voice application development to more types of developers, including web developers who don't want to learn VoiceXML or simply prefer other languages.
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