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| TECHNICAL REFERENCE
MODEL (TRM) VERSION 1.0 OVERVIEW The TRM provides a foundation to describe the standards, specifications, and technologies supporting the secure delivery, exchange, and construction of business (or Service) components and e-Gov solutions. The TRM unifies existing Agency TRMs and electronic Government (e-Gov) guidance by providing a foundation to advance the re-use of technology and component services from a Government-wide perspective. The TRM outlines the standards, specifications, and technologies that collectively support the secure delivery, exchange, and construction of business and application components (Service Components) that may be used and leveraged in a Component-Based or Service Orientated Architecture. As illustrated in Figure 5, The TRM identifies the core technologies that support the Federal Government information technology (IT) transition towards interoperable e-Government solutions. Supporting each Service Area is a collection of Service Categories. Service Categories are used to classify lower levels of technologies, standards, and specifications in respect to the business or technology function they serve. Each Service Category is supported by one or more Service Standards. Service Standards are used to define the standards and technologies that support the Service Category. The final level of the TRM is the Service Specification layer that details the specification and / or provider of the Service Standard specification. 1. SERVICE ACCESS AND DELIVERY AREA The Service Access and Delivery Service Area, as illustrated in Figure 8, defines the collection of Access and Delivery Channels that will be used to leverage the service component, and the legislative requirements that govern it's use and interaction. The Service Access and Delivery Service Categories, Standards, and Specifications are defined below: 1.1 Access Channels Access Channels define the interface between an application and its users, whether it is a browser, personal digital assistant or other medium. 1.1.1 Web Browser - Define the program that serves as your front end to the World Wide Web on the Internet. In order to view a site, you type its address (URL) into the browser's location field. 1.1.1.1 Internet Explorer - Microsoft Internet Explorer (MSIE) is the most widely used World Wide Web browser. http://www.microsoft.com/windows/ie/default.asp 1.1.1.2 Netscape Communicator - Netscape is the second most widely used World Wide Web browser. http://channels.netscape.com/ns/browsers/ 1.1.2 Wireless / PDA - Define the technologies that use transmission via the airwaves. Personal Digital Assistant (PDA) is a handheld computer that serves as an organizer for personal information. It generally includes at least a name and address database, to-do list and note taker. 1.1.2.1 Palm Operating System - Palm is the leading Personal Digital Assistant (PDA). Version 5 of Palm OS provides multitasking and other capabilities that will provide an improved platform for E-Gov solutions. http://www.palmos.com/dev/ 1.1.2.2 Blackberry - The leading email enabled wireless device with wide use in several Agencies. http://www.blackberry.com/developers/na/index.shtml 1.1.2.3 Pocket PC Phone Edition - Microsoft's environment for internet capable cellular phones. http://www.microsoft.com/mobile/pocketpc/phoneedition/default.asp 1.1.2.4 Pocket PC 2000 - Microsoft's environment for PDA level devices. http://www.microsoft.com/mobile/pocketpc/learnmore.asp 1.1.2.5 Symbian Epoc - A leading environment for web capable cellular phones. http://www.symbian.com/developer/index.html 1.1.3 Collaboration Communications - Define the forms of electronic exchange of messages, documents, or other information. Electronic communication provides efficiency through expedited time-of-delivery. 1.1.3.1 Electronic Mail - E-mail (Electronic mail) is the exchange of computer-generated and stored messages by telecommunication. An E-mail can be created manually via messaging applications or dynamically, programmatically such as automated response systems. 1.1.3.2 Facsimile (Fax) - A fax is the digitized image of text and/or pictures, represented as a series of dots (bit map). Faxes are sent and received through telecommunication channels such as telephone or internet. 1.1.3.3 Kiosk - A kiosk is a small physical structure (often including a computer and a display screen) that displays information for people walking by. Kiosks are common in public buildings. Kiosks are also used at trade shows and professional conferences. 1.1.4 Other Electronic Channels - Define the other various mediums of information exchange and interface between a user and an application. 1.1.4.1 System To System - System to System involves at least two computers that exchange data or interact with each other independent of human intervention or participation. 1.1.4.2 Web Service - Web services (sometimes called application services) are services (usually including some combination of programming and data, but possibly including human resources as well) that are made available from a business's web server for Web users or other Web-connected programs. 1.1.4.3 URL - Uniform Resource Locator (URL) is the global address of documents and other resources on the World Wide Web. The first part of the address indicates what protocol to use (i.e. "http://"), and the second part specifies the IP address or the domain name where the resource is located (i.e. "www.firstgov.gov"). 1.2 Delivery Channels Delivery Channels define the level of access to applications and systems based upon the type of network used to deliver them. 1.2.1 Internet - The Internet is a worldwide system of computer networks in which users at any one computer can, if they have permission, get information from any other computer. 1.2.2 Intranet - An Intranet is a private network that is contained within an enterprise. It may consist of many inter-linked local area networks and is used to share company information and resources among employees. 1.2.3 Extranet - An Extranet is a private network that uses the Internet protocol and the public telecommunication system to securely share part of a business's information or operations with suppliers, vendors, partners, customers, or other businesses. An extranet can be viewed as part of a company's intranet that is extended to users outside the company. 1.2.4 Peer to Peer (P2P) - Peer to Peer is a class of applications, that operate outside the DNS system and have significant or total autonomy from central servers, that take advantage of resources available on the Internet. 1.2.5 Virtual Private Network (VPN) - A private data network that makes use of the public telecommunication infrastructure, maintaining privacy through the use of a tunneling protocol and security procedures. |
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