Voxeo Developers Corner

VoiceObjects: Managing Lists with DTMF Input

alyx — Tue, 31 Jan 2012 15:38:49 +0000

Pavel Růžička recently shared this SlideShare presentation, “How To Make a List In a Voice App Shorter By Entering Letters Via DTMF,” which specifically applies to using Voxeo’s VoiceObjects to manage lists with DTMF input. Pavel demonstrates how to treat the VoiceObjects list object as “an audible Excel sheet with unified navigation,” and walks through the programming steps necessary to manage these lists. Ideas discussed in the presentation include collecting input, handling alphanumeric input as well as special characters, translating input, and filtering and iterating lists, including ways to use DTMF to provide navigation within longer lists.

View the presentation, and check out some of Pavel’s other related tutorials:

Make a shorter list by entering letters via DTMF

View more presentations from Pavel Růžička

Prophecy 11.5 Ready for Download

John Amein — Wed, 04 Jan 2012 17:17:06 +0000

The latest version of the Prophecy Media Platform, version 11.5, is now available for download at www.voxeo.com/prophecy. This release brings greater reliability, but most importantly, for those of you looking for higher densities, you’re getting a big performance boost. Prophecy 11.5 is rated at 750 ports and 25 call setups per second with full VoiceXML load on a typical basic Intel server. What does that mean to you? 750 ports is obviously the max number of concurrent calls. Imagine that you have all those ports busy, eight hours a day, 20 days a month. That adds up to 7,200,000 minutes. Of course, we wouldn’t recommend a single box system of that magnitude because you would be putting all your eggs in one basket, but for high-end systems, Prophecy 11.5 port density is leading the market.

Call setups per second matter, too. If a box is rated with high port counts but the call setups per second is not correspondingly high, you may not be able to handle the rate of traffic and your ports will be idle. For example, take 25 call setups per second times 30 seconds per call. To go from zero to peak traffic, you start up 25 new calls every second for thirty seconds. That gives you 25 times 30, equaling 750 calls started up in 30 seconds. If your call lengths were only six seconds, because maybe you’re doing a voting application or something like that, you would peak at 25 * 6 = 150 calls. Most Voxeo applications have a call duration of about 60 seconds, so Prophecy 11.5 has a call setup per second rate that is well matched to making sure you can get the optimum use out of your Prophecy ports.

New Github Repo for Sample Fax-over-IP CCXML Apps for Prophecy 11

Dan York — Wed, 07 Sep 2011 21:26:34 +0000

One of the interesting aspects of the Q&A session of our last Developer Jam Session where we discussed Prophecy 11 was the amount of interest in integrating fax as a communication channel.

And while I personally don’t do much with fax, it’s obvious that some of our customers would like to use it and are very interested in how to do more with it. We’ve included a page in our Prophecy 11 documentation that describes how to both receive and send faxes using P11 and an appropriate T.38 gateway device.

That page includes a couple of sample files in CCXML and to make it even a bit easier to get the files and use them, I’ve copied them up to a public repository on Github:

https://github.com/voxeo/prophecy-fax

Over time we may add more samples to the repo as we make other tutorials. Please feel free to use the samples, copy/paste the code, etc. If you set up Prophecy 11 for fax usage and have an example you’d like to pass along to others, please feel free to contact us (or, if you are a Github user, feel free to fork the repo, commit your changes and issue a pull request).

Enjoy!

Video: Want to Learn More About Voxeo Prophecy 11 and VoiceObjects 11?

Dan York — Wed, 07 Sep 2011 21:15:03 +0000

Would you like to learn more about our recent releases of Prophecy 11 and VoiceObjects 11? In our August 2011 Developer Jam Session I outlined what is new in the new releases of both our core products. You can download the PDF of the slides or the recording of the session from the Jam Session page. You can also watch the session on YouTube:

And if you’d like to try it out yourself, just visit our download page to download a free copy of Prophecy 11 or VoiceObjects 11 for Windows, Linux or Mac OS X.

Voxeo Prophecy 11 Now Available – Add HD/wideband Audio, IPv6 and Fax to Your Apps

Dan York — Tue, 09 Aug 2011 16:18:31 +0000

We are very pleased to announce today the release of Voxeo Prophecy 11, adding support for “HD audio” (a.k.a. “wideband audio”), IPv6 networks and fax communications. You can download Prophecy 11 immediately for use on Windows, Linux or Mac OS X at:

http://www.voxeo.com/prophecy/

The press release about Prophecy 11 has the basic information about the release – and watch this Voxeo Developers Corner blog for more posts over the next few days highlighting how you can use all the new features in “P11″.

You can also read the Prophecy 11 Release Notes and watch our recent Developer Jam Session webcasts about HD Audio and IPv6:

More technical blog posts will be published soon… meanwhile, just visit our Prophecy download page to get started today!

Have you checked out our CCXML Resource Page?

Dan York — Thu, 14 Jul 2011 14:58:12 +0000

Have you checked out our new CCXML Resource Page yet? As part of the announcement that Call Control XML (CCXML) is now a formal W3C “Recommendation” (the highest possible level of standard), we put together a page of resources at:

http://pages.voxeo.com/ccxml/

We got some links to tutorials, documentation and even a white paper about the power of CCXML.

CCXML is a very powerful tool for building communications apps… and you can try out building CCXML apps for free in our hosted cloud or by downloading a free copy of Voxeo Prophecy for Windows, Linux or Mac OS X.

We’re looking forward to seeing what you will build with CCXML… and as always, our support teams are standing by to help you in any way they can.

Next Developer Jam Session: How Do You Hear Me Now? The Power of Wideband (HD) Audio

Sabine Winterkamp — Mon, 06 Jun 2011 07:50:21 +0000

Our next developer jam session is coming soon!

Join us for this session, scheduled for Thursday, June 09, 2011.

In this session, Dan York, Director of Conversations at Voxeo will explain the basics of wideband audio, discuss the various versions of wideband audio deployed in the industry, explain why it is important in terms of business value.

Additionally, he will talk about how wideband audio is implemented in Voxeo’s Prophecy and PRISM products.

Register today for this developer jam session.

8:00 AM US Pacific, 11:00 AM US Eastern, 5:00 PM Central European.

Slides from T-Mobile: How To Enhance An Existing VoiceObjects Voice App With a Text Channel

Dan York — Tue, 31 May 2011 19:28:17 +0000

By way of a posting to our Facebook Page, I learned of a set of slides from Pavel Růžička, a programmer/analyst with T-Mobile Czech Republic on the topic of converting an existing voice app into a multi-channel app using Voxeo VoiceObjects. In his deck, he walks through why you might want to create a multi-channel application, then dives into some VO screenshots (offering tips along the way) and then concludes with a number of things to think about and some references.

Now, in his particular case, the text channel he is using is USSD, a channel really only available to mobile service providers, but the ideas he presents here are certainly applicable to other text-based channels as well.

Thanks, Pavel, for putting together this slide deck – and thanks for letting us know about it!

How to enhance existing voice app with text channel

View more presentations from Pavel Růžička

Announcing Voxeo PRISM Studio

Wei Chen — Thu, 26 May 2011 17:10:37 +0000

Voxeo PRISM Studio is a set of free Eclipse plug-ins to help developers to develop real-time communication applications on top of Voxeo PRISM platform.

Currently it has following plug-ins.

Prism Development Tools

This plug-in has a set of wizards and editors to help developers quickly write SIP/XMPP/HTTP Servlet and Java Media Control applications. Seamlessly integrated with PRISM Server Adaptor and Log Viewer, this plug-in greatly simplifies the development, testing, debugging, and deployment of communication applications on top of Voxeo PRISM platform.

Moho Development Tools

This plug-in has a set of wizards and editors to help developers quickly write Moho based applications. Moho is an easy-to-use open-source framework for building real-time applications on top of the standard Servlet APIs. With Moho framework and the Moho Development Tools, it greatly reduces the complexity of the communication application development.

Prism Server Adaptor.

This is the Eclipse Web Tools Platform (WTP) server adaptor for Voxeo PRISM server. This allows developers to deploy PRISM or Moho projects in a similar way as they deploy a Web project to a Web server like Tomcat. It also redeploys the changes automatically.

Prism Log Viewer.

This plug-in provides a real-time structured view of log streams from all components of Voxeo PRISM. It allows developers to test and debug PRISM or Moho applications without leaving Eclipse.

This version of Voxeo PRISM Studio requires Voxeo PRISM 10.x and Eclipse IDE for Java EE developer (Helios and above). Once you have both installed, you can follow the standard plug-in installation procedure in Eclipse to install Voxeo PRISM Studio from http://www.voxeo.com/prism/studio.

The follow video shows the steps to install and use Voxeo PRISM Studio.

Want to build SMS-only apps? Check out SMSified.com and its REST web API…

Dan York — Wed, 18 May 2011 12:48:22 +0000

Would you like to build applications that only use inbound or outbound SMS? i.e. no voice, IM, web or social channels… just text messaging?

If so, check out our new service -> SMSified.com

SMSified has a super simple REST API that lets you easily send and receive SMS messages using whatever programming language you already use… assuming that language can make HTTP connections. All for just 1 cent per message within the U.S.

The cool part for developers using other Voxeo platforms – you can use your same login credentials. So if you use Evolution or Tropo, you can just go over to SMSified.com and login there with the same username and password.

We’ve spent some good time putting together a solid set of documentation and sample apps with an overview and sections on sending, receiving and reporting. We’re also posting more into to the SMSified blog, complete with videos and screencasts showing you what to do. We’ll be publishing more info to that blog, too, as SMSified moves through its beta stage. One way to stay up on what’s happening with SMSified is to follow the @smsified Twitter account. Don’t forget to check out the FAQ, too!

We’ve seen a great amount of interest in an SMS-only option for building apps and so we’re pleased to launch SMSified to meet that demand. Now we’re looking forward to seeing what you all build with it!

P.S. And obviously if you want to work with more than just SMS, we have Evolution and Tropo to fit your needs!