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Thursday, 06 April 2006 |
What is ECharts? ECharts is a state machine-based programming language for event-driven systems derived from the standardized UML Statecharts language. ECharts distinguishes itself from other Statecharts dialects by focussing on implementation issues such as determinism and code re-use. Like Statecharts, ECharts supports hierarchical state machines, concurrent machines and a graphical syntax. Unlike Statecharts, ECharts supports a simple textual syntax, machine reuse, multiple transition priority levels to minimize non-determinism, machine arrays, and a new approach to inter- and intra- machine communication. ECharts is a hosted language which means that it is dependent on an underlying programming language such as Java. ECharts has a proven track-record in a large-scale commercial deployment. ECharts is available as open source under the Common Public License Version 1.0. Take a look at what ECharts has to offer!
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Last Updated ( Sunday, 18 November 2007 )
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New Releases of ECharts and ECharts for SIP Servlets |
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Wednesday, 06 February 2008 |
We're pleased to announce ECharts Development Kit v1.2.1-beta and ECharts for SIP Servlets Development Kit v2.3-beta.
The highlight of this ECharts for SIP Servlets release is a revised version of the SailFin ClickToDial example using an ECharts machine in place of the original SIP servlet. Our revised example includes a comprehensive tutorial-style document describing the benefits of using ECharts for SIP Servlets to develop re-usable, modular telecom logic for converged applications. The release also includes a number of re-usable ECharts machines including a back-to-back user agent, a call forwarding proxy, two third party call control machines and others. Take a look at the screencast and documentation and download the development kit to see what ECharts for SIP Servlets has to offer.
The ECharts release provides cross-platform, cross-browser support for interacting with ECharts machine diagrams embedded in Javadoc documentation. Adobe's SVG browser plugin is no longer necessary! Browsing your ECharts machines has never been better. Download the stand-alone ECharts Development Kit or get it bundled as part of the ECharts for SIP Servlets Development Kit.
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Last Updated ( Friday, 07 March 2008 )
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The Year of the Open Source SIP Servlet Container |
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Friday, 07 March 2008 |
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Starting with the SailFin announcement at last year's JavaOne conference, followed by the release of the Mobicents Sip Servlets implementation mid-January and then, this month, the release of the Cipango application server, I think it's safe to proclaim that this is the year of the open source SIP servlet container. |
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Last Updated ( Friday, 07 March 2008 )
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ECharts User Manual Softcover Book |
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Tuesday, 04 March 2008 |
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The ECharts User Manual is still available online or as a PDF but if you feel the need to flip pages you can now order a softcover version from here.
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Last Updated ( Friday, 07 March 2008 )
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Call Screening Application for SailFin |
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Monday, 03 March 2008 |
Peter Klein is a community tester for the open source SailFin SIP servlet container project. Over the past month Peter has posted 4 entries to his blog detailing the development of a converged Call Screening application using ECharts for SIP Servlets, the AT&T DFC Application Router (included with the ECharts for SIP Servlets Development Kit) and SailFin.
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Last Updated ( Friday, 07 March 2008 )
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Monday, 19 November 2007 |
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We are happy to announce that the new release of ECharts for SIP Servlets DK, version 2.2 beta, now supports the open-source SailFin SIP servlet container. This blog entry describes some SailFin specific procedures and gotchas when deploying ECharts for SIP Servlets applications on the SailFin container. |
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Last Updated ( Thursday, 14 February 2008 )
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ECharts for SIP Servlets Screencast |
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Monday, 29 October 2007 |
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Tom Smith, the primary ECharts for SIP Servlets developer, shows you how to develop a non-trivial back-to-back user agent application complete with graphical documentation in just over 15 minutes. Tom demonstrates the use of the appgen tool included with the latest ECharts for SIP Servlets Development Kit showing how to quickly get started with SIP servlet application programming.
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Last Updated ( Wednesday, 06 February 2008 )
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Proxy Application Support |
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Tuesday, 30 October 2007 |
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The state-based approach of ECharts makes it very well-suited to back-to-back user agent (B2BUA) applications. With the introduction of the SIP Servlet Application Router, multiple applications can be composed to get rich service behavior. Often it is beneficial to compose proxy applications with B2BUA applications. Our framework provides a mechanism for creating proxy applications (that are not based on state machines) and composing them with ECharts B2BUA applications.
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Last Updated ( Tuesday, 05 February 2008 )
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