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OSGiThe OSGi Alliance is an open standardization organization formed by Sun Microsystems, International Business Machines, Ericsson and others in March 1999 (after it was first called the Connected Alliance). Over the past few years it has specified a Java programming language based service platform that can be remotely managed. The core part of the specifications is a framework that defines an application life cycle model and a service registry. Based on this framework, a large number of OSGi Services have been defined: Log, Configuration Management, Preferences, Http Service (runs servlets), XML parsing, Device Access, Package Admin, Permission Admin, Start Level, User Admin, IO Connector, Wire Admin, Jini, and UPnP.
- R1 released in May 2000
- R2 released in May 2002
- R3 released in March 2003
The Framework implements an elegant, complete, and dynamic component model. Applications (called bundles) can be remotely installed, started, stopped, updated and uninstalled without requiring a reboot (management of Java packages/classeses is specified in painstaking detail). Life cycle management is defined in APIs which allows the remote downloading of management policies. The service registry allows bundles to detect new services, or the going away of services, and adapt accordingly.
The original focus was on Service Gateways but the applicability turned out to be much wider. The OSGi specifications are now used from mobile phones to the new version of the open source Eclipse IDE (which now includes an open source compliant version of International Business Machines's OSGi framework called SMF).
The application areas of the OSGi Service Platform are: Service gateways, carss, Mobile telephony, industrial automation, building automation, PDAss, grid computing, white goods (e.g. BSH), entertainment (e.g. iPronto), fleet management, and IDEss.
Specifications are developed by the members in an open process and made available to the public free of charge and without licensing conditions. The OSGi Alliance has a compliance program that is open to members only. Currently 12 compliant implementations exist.
In 2003 Eclipse selected OSGi as the underlying runtime for their plugin architecture. The Equinox project experimented with this idea and built the runtime for Eclipse R3 which has now been officially released (June 2004).
In October 2003, Nokia, Motorola, ProSyst Software AG and other OSGi members formed a Mobile Expert Group (MEG) that will specify a service platform for the next generation of smart mobile phones, addressing some of the needs that MIDP cannot manage.
See also
References
- OSGi Service Platform, Release 3, IOS Press, ISBN 1-58603-311-5
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The UNH InterOperability Lab
This is the University of New Hampshire InterOperability Lab's web site, currently has consortia in operation to test the following computer communications technologies: 1394, ADSL, ATM, 100Base-T, FDDI, Fibre Channel, Gigabit Ethernet, and Wireless (IEEE 802.11) as of June 1999.
http://www.iol.unh.edu/
IMTC
International Multimedia Teleconferencing Consortium promotes the adoption of industry-wide interoperability standards in teleconferencing products
http://www.imtc.org/
ITU
International Telecommunication Union
http://www.itu.int/
ACM Crossroads Magazine
Crossroads is the student magazine of the ACM and has published many articles about networking.
http://www.acm.org/crossroads/doc/indices/features.html#Networking
IEEE
leader in the development and dissemination of voluntary, consensus-based industry standards
http://standards.ieee.org/index.html
1394 Trade Association
IEEE 1394 is an international standard digital interface that can run up to 400 Mbps over a thin cable. It is one of the most promising technologies for a future high speed "RS-232". This is the trade association working to make it a reality.
http://www.1394TA.org/
OSGi: Open Services Gateway Initiative
The OSG Initiative (OSGi) is an open industry effort lead by Ericsson, IBM, NCI, Oracle, Nortel Networks, Sun Microsystems, Sybase and Toshiba to specify the Open Service Gateway
http://www.osgi.org/
MSP Consortium
Computer telephony focused organization; the site was undergoing a redo during my visit there
http://www.msp.org/
GCATT
GCATT is a telecommunications technology development partnership of government, universities, and the advanced telecommunications industry.
http://www.gcatt.gatech.edu
CompInfo
Telephony, Computer Telephony Integration (CTI), Fax - Information Sources and Suppliers
http://www.compinfo.co.uk/tptel.htm
International Powerline Communications Forum
The leading organisation concerned with the development and deployment of Powerline communication products and services, worldwide.
http://www.ipcf.org/
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