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To control display sessions, from the main screen, pull down the Control menu and select Display Sessions.
The dialog box shown in Control Display Sessions Dialog Box, is displayed.
The list box lists all the display sessions configured for you; you may have up to ten sessions configured. The following list describes the information contained in the Control Display Sessions dialog box.
The number assigned to the session.
The unique identifier for each session. For instructions for changing this option, see Customizing Display Sessions.
The name of the host session record in the configuration file.
The symbolic domain name of the TCP/IP host used by the session. If the session is disabled, this field is blank. This field may be truncated on the right, if necessary.
This name may correspond to a host computer that supports direct TN3270 access over TCP/IP, or to a communications product (such as the main SNAP-IX product) providing the TN server function on another computer. For a TN server, the name shown is the domain name or Internet address of the computer where the TN server software is running.
If the System Administrator has given you permission to override the configured domain name, you can specify the option on the command line to specify the name of the host to use for a given session. For more information about overriding the configured host domain name, see Starting the 3270 Emulation Program.
Identifies the 3270 LU or LU pool that is used by the session.If the session is disabled, the name of the configured LU or LU pool is shown (or blank if no LU name is configured). If the session is active, the name shown is the name of the actual LU used by the session. If TN3270 protocols are being used, rather than TN3270E protocols, the name of the configured LU or LU pool is shown because the actual LU name is not available.
The session number for the associated printer session. This field is blank if no printer session has been associated.
Indicates whether the session is ready to communicate with the host or is already communicating. To conduct terminal emulation or to transfer files using the session, you must enable it. To enable a session, highlight it and choose <Change Status>. For more information, see Enabling and Disabling a Printer Session. The following list describes the possible Status messages.
Disabled
Session is not communicating with TCP/IP. To conduct terminal emulation or to transfer files using this session, you must enable it by highlighting it and choosing <Change Status>.
Enabled nnn
Session is initializing communications with TCP/IP.The variable nnn is the communications check code, displayed as
-+z_nnnon the status line of the 3270 session. The code indicates why the 3270 emulation program has not yet established communications with the host. Status Line Information, explains communications check codes.
The status can also appear as
Enabledwithout a communications check code for a few seconds before it changes to
SSCP.
SSCP
Session has established communications with the host, but is not yet communicating with a host application.
NVT
Session is communicating with the host TN3270 program using data messages in Network Virtual Terminal (NVT) format. This format uses no header and ends all ASCII lines with a carriage return and line feed (CR LF).
TN3270
Session is communicating with the host TN3270 program using data messages in TN3270 format. This format uses no header, LU type 2 data, and TELNET END-OF-RECORD (EOR).
TN3270E
Session is communicating with the host TN3270 program using data messages in TN3270E format. This format uses a 5-byte header, various data types, and TELNET END-OF-RECORD (EOR).
TN3287
Session is communicating with the host TN3270 program using data messages in TN3287 format. This format uses one zero-byte prefix for LU type 1 or LU type 3 data and TELNET END-OF-RECORD (EOR).
Host_application_name
Session is communicating with the named host application. This name is shown if it is available from the BIND image exchanged during session activation. If the BIND image is not available, either the value
TN3270or
TN3270Eis shown.
The Control Display Sessions dialog box provides the following push buttons:
Choose this to make the highlighted session current, so that it is the session you go to first when you begin or resume 3270 emulation. You can make a session current only if it is enabled and if its screen model is one that your terminal can display. If you try to make a disabled session current, a message box warns you that you cannot. In that case, acknowledge the message by choosing <Exit Message> in the message box and then enable the session before making it current. For more information about message boxes, see Message Boxes. For more information about enabling sessions and current sessions, see Enabling a Display Session, and Making a Session Current.
Choose this to enable a disabled session or to disable an enabled or active session. An active session is one that is communicating with the host. In the Control Display Sessions dialog box. An active session's status appears as
SSCP,
TN3270, or the name of a host application. For more information, see Enabling a Display Session.
Choose this when you have finished controlling display sessions.
You can conduct 3270 emulation only on an active session (an enabled session that is communicating with the host). To enable a session, use the following procedure:
Select a disabled session in the list box.
Enabling a session causes the Status message to change from
Disabledto
Enabled. When the session is made the current session, the Status message will change to
SSCP,
NVT,
TN3270,
TN3270E, or
TN3287, and when you have logged on to the host, to the name of the host application. The session is made the current session automatically if it is the first enabled session; otherwise, choose <Make Current>.
If this is the first session enabled, the 3270 emulation display appears in the current screen window. A new screen window is created for each additional session you enable.
The current session is the one you move to when you press Esc at the main screen (or choose Return to Emulator from the File menu). You must enable a session before making it current.
If a session uses a screen model that your terminal cannot display (for example, if your terminal has a 24 x 80 screen and the session uses Model 4 or 4E, which is 43 x 80), you can enable the session, but you cannot make it the current session because it cannot be displayed on the screen when you return to emulation. (You can still access the session using a HLLAPI application, even though you cannot display it on the screen.)
The Motif program does not restrict the screen models that can be displayed, so you can make any session the current session.
To make a session current, use the following procedure:
Select an enabled session in the list box.
Choose <Make Current>. Three asterisks (
***) mark the session as current.
If you disable the current session, the next enabled display session (with a screen model that can be displayed) becomes the current session automatically. If no display sessions with suitable screen models are enabled, no session is current.
To disable an enabled session, highlight the session in the Control Display Sessions dialog box and choose <Change Status>. Status changes to
Disabled.
If you try to disable an active display session, the emulation program will ask you whether you want to deactivate the session. The session must be deactivated before it can be disabled.
If you try to disable a display session with an active associated printer session, the Session Is in Use dialog box informs you that both sessions will be deactivated if you select Deactivate Session.
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