148 lines
9.3 KiB
HTML
148 lines
9.3 KiB
HTML
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<meta name="DC.Title" content="Configure Telnet server for 3270 full-screen mode" />
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<meta name="abstract" content="Telnet client users can sign on and run 5250 full-screen applications using 3270 full-screen mode." />
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<title>Configure Telnet server for 3270 full-screen mode</title>
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<body id="rzaiwmode3270"><a name="rzaiwmode3270"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Configure Telnet server for 3270 full-screen mode</h1>
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<div><p><span>Telnet client users can sign on and run 5250
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full-screen applications using 3270 full-screen mode.</span></p>
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<p>The server negotiates 3270 full-screen support with any Telnet client application
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that supports 3270 full-screen applications, rather than 5250 full-screen
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applications. An example of a system that negotiates 3270 full-screen support
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is the IBM
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S/390<sup>®</sup> family.</p>
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<p>Telnet 5250 (TN5250) delivers the data stream between the two systems as
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EBCDIC. Because the 3270 data streams are translated into 5250 data streams,
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the workstation devices operate as a remote 5251 display to the iSeries™ server
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and application programs.</p>
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<p>After you have completed the general configuration of the Telnet server,
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there are a few additional steps to enable server support for 3270 full-screen
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mode. Full-screen mode is a "block" mode as opposed to a "line" mode. "Line"
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mode is when data transmits one line at a time, whereas "block" or full-screen
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mode transmits the whole screen at one time.</p>
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<p>For information about supported 3270 device capabilities, refer to <a href="rzaiwdefcap3270dev.htm">Supported 3270 terminal types</a>.</p>
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<p>For 3270 full screen considerations such as screen size, keyboard mapping,
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cursor select key, and error messages and null characters, see <a href="rzaiwmanage3270.htm">3270 Telnet client sessions</a>.</p>
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<p>Complete the following tasks to configure the Telnet server for 3270 full-screen
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mode:</p>
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<ol><li><a href="#rzaiwmode3270__SPTCTQSV3270">Check the QKBDTYPE system value</a></li>
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<li><a href="#rzaiwmode3270__SPTSTDKM3270">Set the default keyboard mapping</a></li>
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<li><a href="#rzaiwmode3270__SPTCAKM3270">Change a keyboard map</a></li>
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<li><a href="#rzaiwmode3270__SPTCMQ3270">Change message queue</a></li>
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</ol>
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<div class="section" id="rzaiwmode3270__SPTCTQSV3270"><a name="rzaiwmode3270__SPTCTQSV3270"><!-- --></a><h4 class="sectiontitle">Check the QKBDTYPE system value</h4><p>When
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the iSeries Telnet
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server automatically creates virtual display devices, it uses the QKBDTYPE
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system value to determine the keyboard type for the virtual device.</p>
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<p>If
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the initial creation of the virtual device fails by using the QKBDTYPE system
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value, the Telnet server uses the keyboard value USB to try to create the
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device. If the second attempt to create the virtual display device fails using
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the value of USB, then a message (CPF87D7) is sent to the system operator
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message queue. This message indicates that the system cannot automatically
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select the virtual device.</p>
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</div>
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<div class="section" id="rzaiwmode3270__SPTSTDKM3270"><a name="rzaiwmode3270__SPTSTDKM3270"><!-- --></a><h4 class="sectiontitle">Set the default keyboard mapping</h4><p>A
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3270 display station connected to an iSeries server using Telnet appears to
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be a 5251 display station to an iSeries server. The 3270 display station
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keyboard has a 5251-equivalent keyboard map associated with it, which allows
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it to complete 5251-equivalent functions on the iSeries server.</p>
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<p>When a Telnet client
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system user first signs on in 3270 full-screen mode, the iSeries server
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automatically assigns the default keyboard map to the user's 3277, 3278, or
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3279 keyboard. Avoid this by including a user-defined keyboard map in the
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user's profile sign-on procedure. This supplies the mapping needed for the
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3270 keyboards to do most of the same functions as their 5250-equivalent keyboards
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do.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Display a keyboard map</h4>You can use the Display Keyboard
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Map (DSPKBDMAP) command to see the current keyboard mapping. Another method
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is to use option 6 (Display 3270 keyboard map) on the Configure TCP/IP Telnet
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menu, while your terminal is in 3270 emulation mode.</div>
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<div class="section" id="rzaiwmode3270__SPTCAKM3270"><a name="rzaiwmode3270__SPTCAKM3270"><!-- --></a><h4 class="sectiontitle">Change a keyboard map</h4><p>Use the Change
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Keyboard Map (CHGKBDMAP) command if you want to make minor changes to the
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default keyboard map. This command is available from the Configure TCP/IP
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Telnet menu as option 7 (Change 3270 keyboard map).</p>
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<p>If you want to set
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a new keyboard map, use the Set Keyboard Map (SETKBDMAP) command. This command
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is option 7 (Change 3270 keyboard map) on the Configure TCP/IP Telnet menu.
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The key assignments that you specify are in effect until you use these commands
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again to specify new key assignments or until you sign off.</p>
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<div class="note"><span class="notetitle">Note:</span> The difference
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between CHGKBDMAP and SETKBDMAP is that, with SETKBDMAP, the system applies
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the defaults and then the changes in the SETKBDMAP are applied. With CHGKBDMAP,
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the system applies defaults plus any changes that you have previously made
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during this session, and then the changes in the CHGKBDMAP are applied.</div>
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<p>For
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more information about keyboard mapping see <a href="rzaiwkeybrdmap3270.htm">3270 keyboard mapping for Telnet servers</a>.</p>
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</div>
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<div class="section" id="rzaiwmode3270__SPTCMQ3270"><a name="rzaiwmode3270__SPTCMQ3270"><!-- --></a><h4 class="sectiontitle">Change message queue</h4><p>A message queue
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is like a mail box for messages. The iSeries server has several message queues
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that hold messages that provide helpful information when finding and reporting
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problems. When your workstation message queue is in break mode, messages appear
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on the 3270 device exactly as they appear on the 5250 display. To receive
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messages in break mode, you must specify *BREAK on the change message queue
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(CHGMSGQ) command. When your workstation is not in break mode, you receive
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the following message: <tt>A message has arrived on a message queue</tt>.</p>
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<p>To
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retrieve this message and continue using the workstation, follow these steps:</p>
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<ol><li>Press the function key assigned to the help function, or the function
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key that is assigned to the error reset function.</li>
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<li>Enter the Display Message (DSPMSG) command or the function key that is
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assigned to the system request function followed by option 4 (Display Message)
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to view the waiting message.</li>
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<li>Set the workstation message queue to break mode to see the messages as
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they arrive.</li>
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</ol>
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</div>
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<div class="section"><h4 class="sectiontitle">Reset the display's input-inhibited light</h4><p>When using
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an iSeries server
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from a 5250-type terminal, pressing certain keys in certain situations causes
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input to be inhibited. When this occurs, the 5250 terminal displays an input-inhibited
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light.</p>
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<p>Two asterisks shown in the lower-right corner of the display
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indicate the input-inhibited light. When the keyboard is inhibited, any keys
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mapped to the iSeries function
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keys are ignored.</p>
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<p>To reset the keyboard, press the Enter key, or press
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the key mapped to the iSeries Reset key.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaiwdefcap3270dev.htm">Supported 3270 terminal types</a></strong><br />
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<span>This topic describes the capabilities of the
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3270 devices that Telnet supports.</span></li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiwemultypes.htm" title="The preferred emulation for the iSeries is 5250 emulation. However, the iSeries also supports 3270 and VTxxx emulation.">iSeries supported emulation types</a></div>
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</div>
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</div>
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</body>
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