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Topic: 3270 terminals

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	The IBM 3270 (Site not responding. Last check: 2007-10-29)
		The 3270 is much more tightly coupled to the mainframe than a regular terminal would be.
		Up to 32 (?) 3270 terminals are connected via coaxial cable to a 3274 control unit, which in turn is connected (perhaps along with many other 3274s) to a mainframe I/O channel.
		At some point after the introduction of 3270 terminals, 3270 protocol converters began to appear, which allowed ordinary ASCII terminals to access 3270 applications by masquerading as 3274 control units to the mainframe and converting between 3270 datastreams and the escape sequences of the particular ASCII terminal.
	www.columbia.edu /acis/history/3270.html (253 words)

	Needs Assessment
		The existing 3270 terminals in the building should be replaced with PC workstations and 3270 emulation software purchased to allow connection to the mainframe.
		The exact number of 3270 terminals is unknown but since 50% of the total number campus-wide are going to be replaced due to the lease expiring, these terminals may have to stay in use for a certain amount of time.
		Since exact number of 3270 terminals in use in the Cancer Research Center is unknown, it will be hard to determine if the 3270 terminals should be removed with PC or not.
	www.isd.net /kching/Csc340/NetworkDesign/DesignPaper.htm (3493 words)

	rfc1576.txt (Site not responding. Last check: 2007-10-29)
		IBM terminals are generically referred to as 3270's which includes a broad range of terminals and devices, not all of which actually begin with the numbers 327x.
		To terminate the connection the socket is closed by one of the session partners.
		The 3270 ATTN key is interpreted by many host applications in an SNA environment as an indication that the user wishes to interrupt the execution of the current process.
	www.ufaqs.com /rfc/rfc1576.txt.htm (2988 words)

	How Your Computer Communicates with BASIS
		The term "3270 emulation" refers to the fact that these software programs interface with mainframe applications by making it look to the mainframe as if your desktop computer is an IBM 3270 terminal (sometimes called dumb terminals).
		Depending upon the 3270 software you are running, you may see variations in the keys used in the default setup, and in your ability to reset, or re-map those keys.
		This controls which type of 3270 emulation you use, which also of course depends upon the ability of the software you are using to support that level of emulation.
	www.uark.edu /basis/Demo/HowPCtoMainframe.html (1803 words)

	RFC1646
		IBM terminals are generically referred to as 3270's which includes a broad range of terminals and devices,not all of which actually begin with the numbers 327x.
		The terminals are also half duplex and block mode in their operations, which results in the need to communicate when blocks are being sent, when they end, and when they cannot be sent.
		The actual connection between a terminal and the applications is referred to as a session, and it is this session which has both in- band and out-of-band information flows sent between the applications and the terminals.
	www.unix.org.ua /rfc/rfc1646.html (3157 words)

	Mandragor & Apinc - Free Documentation Base
		Motivation 3270 display terminal data differs from traditional display terminal data in that it is block mode and uses EBCDIC instead of ASCII character representation.
		The 3270 ATTN (Attention) Key The 3270 ATTN key is interpreted by many host applications in an SNA environment as an indication that the user wishes to interrupt the execution of the current process.
		The 3270 SYSREQ Key The 3270 SYSREQ key is useful in an environment where the telnet server is attached to the host using SNA.
	docs.mandragor.org /files/RFCs/15xx/1576 (3213 words)

	Network Computing
		In what amounts to a very primi tive client/server mode, th e host does all of the computing, the 3270 terminal requests data and displays whatever is sent to it.
		Though legacy 3270 terminal apps can be highly efficient in the hands of a skilled terminal user, the world has changed.
		The 3270 terminals and terminal emulators are replaced by presentation screens that are native to the new computing environment, as when MS Windows GUI screens replace 3270 screens on local PCs.
	www.networkcomputing.com /703/703work2.html (1824 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		These rugged terminals were everywhere --- in the library, at registration, in the administrative offices of the departments and on the desks of advisors.
		By using their computer to act as a 3270 series terminal, they can give up their old 3270 terminal and have just one machine.
		As the fleet of 3270 series terminals is retired and replaced with computers with mice that are capable of color and fonts and arbitrary sized windows, we will see the next generation of administrative data access tools deployed assuming these features.
	www.clas.ufl.edu /docs/Conlon_on_Computing/co0394.html (576 words)

	CBL - CBLi and 3270 Terminal Emulation Software (Site not responding. Last check: 2007-10-29)
		Note that, when using terminals with large dimensions, it may be necessary to reduce the font size and/or increase the resolution of the display in order to view the entire emulated terminal within the physical display.
		The 3270 keyboard may be configured so that specific actions (keyboard functions and 3270 emulator macros) can be mapped to any of the shift-states (Shift, Alt, Ctrl, etc.) of an individual key.
		3270 emulator macros may be written or recorded to perform multiple functions and keystrokes supported by the emulator.
	www.cbl.com /cbli3270.html (1411 words)

	JBM Electronics 3270 Terminal Overview
		In general, the differences between the terminals are their introduction date, screen size, and attribute support.
		The 3270 uses a bit in the attribute to determine which field is sent to the host when an Attention Identifier (AID) key is entered.
		The 3270 terminal uses an AID key to cause a transmission to the network.
	www.jbmelectronics.com /product/3270.htm (473 words)

	JBM Bisync Protocol Support
		Depending on the terminal, the controller is placed in a separate unit and cable attached to the terminals.
		If several terminals are attached to a controller, the controller will determine the status of each terminal before responding to the poll.
		The RJE terminals are characterized by large amounts of data sent in long bursts.
	www.jbmelectronics.com /product/bisync.htm (512 words)

	Kermit FAQ - Where Is the Key Map for 3270 Emulation? (Site not responding. Last check: 2007-10-29)
		Real 3270 terminals have all sorts of keys that regular ASCII terminals (and PCs and Macintoshes and UNIX workstations, etc) do not have.
		A big part of the job of a 3270 protocol converter is to convert between ASCII keystrokes (including escape sequences) and 3270 keys such as PA1 through PA3 and PF1 through PF24.
		So in order to make a 3270 key map for Kermit, you first have to find out what the mapping in the protocol converter is, and then assign the ASCII values (characters or sequences) that correspond to each 3270 key to the desired PC (or Mac, etc) key.
	www.columbia.edu /kermit/faq-c-mfk.html (215 words)

	Ascert: 3270 & 6530 Terminal Simulators for Testing Green-Screen Applications - VTERM
		Standard VersaTest facilities are used to insert a VPRO process between a 6530 or 3270 terminal and the program driving it (this is typically a Pathway Terminal Control Process (TCP), although this does not have to be the case for VersaTest to function properly).
		The user then performs the data entry actions at the terminal that he wishes to reproduce in an automated test to be performed later.
		The VTERM Terminal Simulator uses the standard VTALK constructs in its scripts and these may be modified or enhanced to alter the actions included in the script or to change user input values without having to re-enter the data from a terminal.
	www.ascert.com /versatest_vterm.html (1151 words)

	MAGEC Color 3270
		MAGEC's Color 3270 Feature is necessary only to enable you to take advantage of the extended color and highlighting capabilities which are available on the newer terminal hardware.
		If your site does not have color terminals, then you will be able to develop applications which will operate correctly on your non-color terminals and will also work correctly (and more impressively) when you do install the color terminals, without any program changes or re-compiles.
		If you execute your MMP from a mainframe terminal which has the 4-color (Base Color) option and you are using a color Mask, then the terminal hardware will automatically revert to the "monochrome" state (all green, usually), except for those fields for which you have specified a color.
	www.magec.com /DOC/color_main.htm (1789 words)

	Microsoft TechNet: Software AG CICS 3270 Adapter for MS Host Integration Server 2000
		The 3270 Bridge provides an interface for 3270-based CICS transactions without the use of a 3270 terminal or a 3270 terminal emulator, making it easy and economical to integrate new technologies with existing 3270-based applications.
		Each 3270 screen will be represented as a separate COM method call by the Visual Basic or Visual C++ application, with relevant input and output parameters as well as the screen-to-screen navigation screen exposed as parameters on the method.
		3270 emulation programs have a further disadvantage in that client applications have to be designed to accommodate the random behavior of the remote host application.
	www.microsoft.com /technet/archive/host/deploy/softwrag.mspx (2281 words)

	' + pPage + '
		Both terminals share a block orientation that lets the operator enter information into fields and correct the data at the terminal before transmitting it to the mainframe.
		In the mainframes, the 3270 family of terminals and printers is the backbone of the user interface.
		Attachment to the 3270 terminal is made with a cluster controller (3174) that interfaces to an integrated controller in the AS/400.
	docs.rinet.ru /MuNet/ch04/ch04.htm (9192 words)

	Argecy: Terminals, Displays and Thin Clients - IBM - Coax (3270) Terminals - IBM 3290 Plasma Terminals
		A member of the 3270 Display System family, the 3290 provides for the display of up to 9,920 alphanumeric characters in multiple-screen format options for use in entering data into and retrieving data from S/370 Processors, 4300 Processors, 9370 Processors and 8100 Information Systems.
		A member of the 3270 family, the 3290 incorporates a flat plasma panel as its display medium to provide a large capacity display for alphanumeric data and graphic images.
		The 3290 is data-stream compatible with all models of today's 3270 displays in alphanumeric application environments and complements the 3270 product family by extending 3270 capability to include large screen and multiple screen application usage.
	www.argecy.com /index.php?pfile=3290 (1670 words)

	Host 3270 Access Using TCP/IP (Site not responding. Last check: 2007-10-29)
		To provide a general description of the process for providing 3270 access to mainframe applications and services using TCP/IP as the transport.
		Terminals or workstations requiring access to mainframe based applications and services are generically referred to as 3270 terminals which include a broad range of devices.
		The TN3270 or Telnet application is a terminal communications program that allows microcomputers to connect to various host computers.
	www.vccs.edu /its/guidelines/tn3270ip.htm (458 words)

	IBM 3270 - Wikipedia, the free encyclopedia
		In contrast also, ICI Mond Division's "Works Records System", the first known shared public spreadsheet used the 3270 successfully for what was, in effect, a high powered version of today's spreadsheets with additional functions.
		It remained in continual use for 27 years up until 2001 and, despite its lack of a GUI, cells could be defined anywhere on the screen (not necessarily in rows or columns) and could be instantly re-configured for length, content and formulae as required.
		The 3270 terminal was used extensively in the commercial world for custom written applications demanding high transaction throughput.
	en.wikipedia.org /wiki/IBM_3270 (901 words)

	IBM Video Terminal Information
		CoreStore has photos of IBM 3270 and 3290 terminals in action, connected through a 3174 terminal controller.
		Some effort was made in the late 1990s to improve the "tn3270" method of connecting IBM 3270 and 5250 terminals to hosts via TCP/IP.
		If your boss has just told you that you've got to write a 3270 emulator program on a rush schedule, and you are still puzzled about what "EBCDIC" means, then the stool is to sit on and take deep breaths for a minute before you go on.
	www.cs.utk.edu /~shuford/terminal/ibm.html (847 words)

	TPS / 3270 Legacy Bisync ( Binary Synchronous Communications )
		/ 3270 (BSC) is a full-featured mainframe 3270 terminal (LU2) and printer emulator (LU1 / LU3).
		It is also designed to allow 3270 print jobs to be directed to any standard printer connected to a AIX
		/3270 (BSC) currently supports the standard 3270 protocol for terminals (LU2) and printers (LU1 and LU3).
	www.tps.com /Products/3270BSC/3270bsc.shtm (552 words)

	RFC1576
		Abstract This document describes the existing implementation of transferring 3270 display terminal data using currently available telnet capabilities.
		RFC 1041 [1] attempted to standardize the method of negotiating 3270 terminal support by defining the 3270 Regime Telnet Option.
		The 3270 data stream consists of a command and its associated data.
	www.unix.org.ua /rfc/rfc1576.html (3145 words)

	IBM dumb terminals: 3472, 3483, 3482, 3192, and other coax workstations (Site not responding. Last check: 2007-10-29)
		Also known as 3270 terminals, they come in various screen sizes, screen colors, keyboard styles, and with or without a printer port.
		All models of this terminal attach to most VGA or SVGA monitors, have 122-key or 102-key keyboard options, parallel printer port, and mouse option.
		These first generation Infowindow terminals have a choice of 122-key, 102-key, or 104-key keyboards.
	www.commercecomputer.com /3270.html (274 words)

	HostBridge - FAQs: Existing CICS Applications
		When you access CICS from a 3270 terminal (real or emulated), your session is being managed by special program within CICS (we will refer to it as the “terminal handler”).
		It is the terminal handler that interacts with you at the terminal and allows you to specify the name of the transaction in the upper left corner of the screen.
		The terminal handler receives the information from the terminal and issues the START request to invoke the transaction.
	www.hostbridge.com /products/faqs/apps_exist (682 words)

	Application Development Trends - The old (3270) and the new (Web services)
		Rhyne said that while there aren't many 3270 terminals left, there are a lot of mainframe applications still running that were originally designed for green screen display.
		So what happens is that you screen scrape the 3270 and put a Web front end on it; [you then] go out onto the Web and get hit with 10 or 50 times the load that the original application was designed for.
		Rhyne asserts that the 3270 issue is tackled ''in the WebSphere Studio Enterprise Developer product, which is specifically aimed at enterprise developers, including those folks with COBOL and PL/1 application development responsibilities.
	www.adtmag.com /article.asp?id=7199 (543 words)

	Mainframes and the Internet
		Many ASCII terminals were dumb terminals that simply scrolled a string of text from left-to-right, top-to-bottom.
		As the presentation logic transforms from 3270 format to HTML forms the purpose of the application program changes from a terminal request to an application request that is data or process oriented.
		For example, the positioning of the cursor in a field on a 3270 screen must be converted to placing focus on the field within the HTML form.
	www.simotime.com /l2ntech1.htm (4107 words)

	Affirmative - YEStation Thin Client Terminals
		Windows, Browser and IBM terminal emulation can be operated using the stylus provided and the popup, on-screen keyboard used only when data input is required.
		No operator re-training (or the resultant errors!) is required when a user moves from a "dumb" terminal to a PC.
		Replacement keyboards for selected models of IBM, Decision Data, CLI and I-O twinax terminals will extend the financial life of these corporate assets.
	www.twindata.com /affirmative.htm (631 words)

	HP OpenVMS systems
		HP SNA 3270 Application Services provides a library of callable routines and other components for building OpenVMS applications that support processing of 3270 data stream.
		When used with the HP SNA Domain Gateway, these 3270 data stream applications can be accessed from SNA networked 3270 block mode terminal and PC users.
		HP SNA 3270 Data Stream Programming Interface (3270 DS) allows user-written applications, running on networked OpenVMS systems, to exchange messages with cooperating applications in an IBM host.
	h71000.www7.hp.com /network/openvms_servers_and_desktops.html (711 words)

	RFC 1646 (rfc1646)
		Graves, Butts & Angel [Page 1] RFC 1646 TN3270 Extensions July 1994 IBM mainframe applications systems have existed for almost two decades now and are used to serve tens of thousands of users daily.
		Graves, Butts & Angel [Page 2] RFC 1646 TN3270 Extensions July 1994 One such out-of-band flow is the LUSTAT message which tells the application that the status of the terminal has changed, and is how a printer or screen tells the application that it is ready, or is not ready to receive data.
		B. Can establish the agreement between client and server on the terminal type that will be used.
	www.cse.ohio-state.edu /cgi-bin/rfc/rfc1646.html (3020 words)

	tn3270 for the Macintosh
		Tn3270 is a terminal emulation program for connecting to computers which use IBM 3270 terminals.
		To use tn3270, the host computer must provide a telnet server which supports the extensions for 3270 terminals.
		This support allows tn3270 to operate with hosts which establish a line mode connection before entering 3270 mode, as well as with line mode only hosts.
	www.brown.edu /Facilities/CIS/tn3270 (569 words)

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