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Welcome to ECharts
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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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Three Part DFC App Router Tutorial |
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Monday, 04 August 2008 |
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Eric Cheung has just finished posting the last two parts of his three part tutorial describing how to use the DFC application router with E4SS (ECharts for SIP Servlets) and the SailFin container.
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Last Updated ( Monday, 04 August 2008 )
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Monday, 14 July 2008 |
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Over the past year, I've been familiarizing myself with the latest web application development frameworks like Ruby on Rails, Grails, Pylons etc. My interest has been motivated by the prospect of rapidly developing converged (SIP + HTTP) telecom applications using ECharts for SIP Servlets (E4SS) and one of these frameworks.
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Last Updated ( Monday, 04 August 2008 )
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E4SS Featured in IPTComm 2008 Demo |
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Monday, 14 July 2008 |
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On July 3 at IPTComm 2008 (the International Conference on Principles, Systems and Applications of IP Telecommunications) in beautiful Heidelberg Germany, E4SS (ECharts for SIP Servlets) was featured in a joint technology demonstration by Ericsson Research and AT&T Labs Research.
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Last Updated ( Monday, 04 August 2008 )
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Go Native! Special E4SS Build for SailFin Using Native App Router API |
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Wednesday, 21 May 2008 |
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Announcing a special build of ECharts for SIP Servlets (E4SS) and the DFC Application Router, just for the SailFin container! The regular release of ECharts for SIP Servlets Development Kit (version 2.4-beta and earlier) is designed to work on JSR 116 containers. It supports JSR 289 style application composition via an adaptation layer. The ECharts for SIP Servlets library in this special build utilizes the full SIP Servlet 1.1 (JSR 289) API. At the same time, the DFC AR is a native JSR 289 Application Router which can be deployed directly into the container to override the default SailFin alphabetical router. |
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Last Updated ( Monday, 28 July 2008 )
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ECharts 1.3-beta Released! |
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Tuesday, 20 May 2008 |
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The highlights of this ECharts release are support for "mixed state" machines and Javamachine serialization.
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Last Updated ( Tuesday, 20 May 2008 )
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ECharts for SIP Servlets 2.4-beta Released! |
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Tuesday, 20 May 2008 |
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This release of the ECharts for SIP Servlets Development Kit is all about convergence and reusability. This version includes a general-purpose, lightweight convergence framework that supports interaction between ECharts servlets (B2BUAs or proxies) and the external Java environment. The framework makes it possible to, for example, use HTTP to control a SIP call or, conversely, have the non-SIP environment be notified of call status. To find out more, take a look at the new section of the ECharts for SIP Servlets manual describing the convergence framework, or look at the reusable, converged ECharts for SIP Servlets telecom features included with this release:
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Last Updated ( Tuesday, 20 May 2008 )
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SIP Application Competitions |
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Saturday, 10 May 2008 |
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In addition to the GlassFish Awards Program, which includes SailFin-oriented projects, a new competition was announced at JavaOne this week. The Sun-Ericsson application competition will be awarding prizes for the best IMS client-server application using the open source SailFin SIP servlet container and Ericsson's Service Development Studio. Both competitions are great opportunities to give ECharts for SIP Servlets a try. You'll quickly see that ECharts for SIP Servlets is the best way to develop non-trivial, robust, converged SIP applications. |
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Last Updated ( Saturday, 10 May 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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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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