[Asterisk-Dev] VXML (was Call control problems from Java)

[David Pollak]

Guys,

Doing CCXML and VoiceXML in Java is a great idea.  I've been working on 
it myself for a couple of weeks.  However, I'd strongly recommend 
against doing it in the same process as Asterisk for a number of reasons:
- JVMs crash.  A crashing JVM should not bring your Asterisk process down.
- If you run the JVM in a separate process that enables running it on a 
different machine and having one control machine handling multiple 
Asterisk instances.
- You'll want to control the CCXML process from a web browser (e.g., 
check on call status, etc.) Putting a web server (e.g., Tomcat) inside 
the Asterisk process doesn't make a lot of sense
- If you want to access corporate data via Enterprise Java Beans 
(something that folks might want to do in a CCXML/VoiceXML application) 
you'll need an EJB container (WebLogic, WebSphere, JBoss)... which you'd 
also have to run in the Asterisk process.

There's no real benefit to running the JVM in the Asterisk process and 
there are a lot of downsides to it.  My 2 cents -- do a bridge to an 
external JVM.

Thanks,

David

Zac Wolfe wrote:

>Actually VXML/CCXML isn't that huge.  Once we get the Java stuff sorted out
>(which is almost there), building a VXML interpreter in Java isn't that big
>a deal.  And, I like Java.
>
>Zac
>-----Original Message-----
>From: Steve Underwood [mailto:steveu at coppice.org]
>Sent: Friday, October 01, 2004 12:11 PM
>To: zacw at safisys.com; Asterisk Developers Mailing List
>Subject: Re: [Asterisk-Dev] Call control problems from Java
>
>
>Zac Wolfe wrote:
>
>  
>
>>Hi Miroslav,
>>
>>I'd *love* to have some help on this project but lets see if our goals are
>>in sync.
>>
>>My overall goal is to develop a Java-based VXML/CCXML engine for Asterisk.
>>Achieving this requires that I have complete call control from Java.
>>Optimally, we could then do away with the Asterisk Dialplan entirely and do
>>everything via VXML/CCXML.  The AGI interface is OK but for my application
>>    
>>
>I
>  
>
>>need fine-grained event-driven processes where we can track each call from
>>setup to tear-down and everything in between.
>>
>>
>>    
>>
>Why would it make any sense to build a huge thing like a VoiceXML again
>in Java, when a perfectly good free one in C++ already exists? Reusing
>OpenVXI seems far more sane.
>
>Regards,
>Steve
>
>
>
>
>
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