KNOCK! KNOCK! "WHOıS THERE?"

THE MAGAZINE FOR COMPUTER APPLICATIONS Circuit Cellar Online offers articles illustrating creative solutions and unique applications through complete projects, practical tutorials, and useful design techniques.

	KNOCK! KNOCK! "WHOıS THERE?"
Using UPnP to Respond to Inquiries by Edward F. Steinfeld Start ı UPnP Overview ı Functions ı Device Addressing, Discovery, and Description ı Control, Event Messaging, and Presentation ı UPnP Forum ı Software Tools ı Hardware ı Easier Deployment ı Sources and PDF SOURCES and PDF Download the PDF of this Article. Edward F. Steinfeld has more than 25 years experience in real-time and embedded computing. He began as a programmer writing code and designing hardware to test hybrid circuit boards. He has marketed embedded and real-time products to OEMs and resellers for Digital Equipment Corp., VenturCom, Inc., and Phar Lap Software. His international experience includes a stint in Hong Kong as a Far East channels manager and responsibility for international OEM marketing in Europe and the Pacific Rim. Ed is now providing market research, planning, and services to the embedded computing industry. He has been an evangelist for embedded web products since 1995, when he first announced the "Worldıs Smallest Web Server" for Phar Lap Software. He may be reached by e-mail at edward@go-embedded.com. RESOURCES The World Wide Web Consortium (W3C) develops interoperable technologies (specifications, guidelines, software, and tools) to lead the Internet to its full potential as a forum for information, commerce, communication, and collective understanding, www.w3.org. The Internet Engineering Task Force (IETF) is a large open international community of network designers, operators, vendors, and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet. It is open to any interested individual, www.ietf.org or www.ietf.org/internet-drafts/. SOURCES UPnP Forum Microsoft Corp. (206) 882-8080 Fax: (206) 936-7329 http://upnp.org Windows SDK Microsoft Corp. (206) 882-8080 Fax: (206) 936-7329 www.microsoft.com/hwdev/upnp Linux SDK Intel Corp. (408) 765-8080 Fax: (408) 765-9904 www.intel.com http://upnp.sourceforge.net http://intel.com/ial/upnp Invensys plc Invensys +44 (0)20 7834 3848 Fax: +44 (0)20 7834 3879 www.invensys.com UPnP, HTTP, XML stacks Allegro Software Development Corp. (978) 264-6600 Fax: (978) 266-2839 www.allegrosoft.com Java-based UPnP, HTTP, XML stacks Metro Link, Inc. (954) 660-2500 Fax: (954) 938-1982 www.metrolink.com Mitsubishi Electric & Electronics USA, Inc. (408) 730-5900 Fax: (408) 732-9382 www.mitsubishichips.com/products/mcu/index.html NET+ARM chip with UPnP NetSilicon, Inc. (781) 647-1234 Fax: (781) 893-1338 www.netsilicon.com Light controller used in the Microsoft SDK X10 Wireless Technology, Inc. 800-675-3044 www.x10.com PREVIOUS Circuit Cellar provides up-to-date information for engineers. Visit www.circuitcellar.com for more information and additional articles. For subscription information, call (860) 875-2199, subscribe@circuitcellar.com or subscribe online. ıCircuit Cellar, the Magazine for Computer Applications. Posted with permission.