TN3270 Connection (Display Session)

IP Host Name
This is the name, or IP address, of the host computer to connect to. If a text string is entered the TCP/IP protocol will translate it into an IP address.  The IP address number can also be entered directly. Both IPv4 and IPv6 are supported.

TCP Port
The default value for this parameter is 23. Normally, this number is only changed for security purposes.

Timeout (sec)
This value designates the number of seconds to wait for a host connection. If a connection is not made within this time period and there are alternate back-up IP Host Names configured in the  Advanced tab, then an attempt to connect to those IP Host Names will be made.

Auto Reconnect
If this option is enabled, PASSPORT will try to reestablish a session with the host if that session times out or is unexpectedly disconnected or if the host is down when trying to connect. PASSPORT will attempt to reconnect after first waiting for 1 second, then 5, 10, 15, 20, 25 seconds, and then 30 seconds thereafter between each attempt until a connection is established. This helps reduce network traffic. Once PASSPORT successfully connects to the host, the reconnection value will be reset to 1 second again.

If you log off a mainframe session using a command such as VMEXIT, LOGOFF, or CSSF LOGOFF, the host session will be disconnected and another session with the host will automatically be initiated, returning you to the host log on prompt. If this option is not selected, you will get a blank screen if disconnected from your mainframe session. You will then have to perform a Communication>Disconnect command followed by a Communication>Connect command to reestablish the session.

Screen Size
For TN3270 emulation, screen size models 2, 3, 4, 5, and Dynamic are supported. The model number refers to the number of rows and columns the terminal can display. If you do not configure the correct screen size, you may not be able to make a connection to the host.

Telnet Device Type Override
This text entry provides the ability to override the Device Type String that is automatically generated by the Screen Size and Extended Attribute settings.
For example: If screen size Model 5 and extended attributes are enabled, the device type "IBM-3278-5-E" is generated in accordance with the IETF RFC 2355 specifications. However, some older TN3270 servers may interpret this incorrectly as no extended attributes and may need the device type "IBM-3279-5-E" typed into the Telnet Device Type Override field.

Host Code Page
Select the appropriate host code page that is used by the host computer system. This selection determines the translation tables used to convert text characters between the host and the PC. The default is 1140 for US/Canada with Euro support.

TN3270E Support
If this option is enabled, TN3270E enhanced terminal emulation is used and the following features are supported. If the host computer does not support TN3270E and this option is enabled, then basic TN3270 will be used.

Generic
This is the default TN3270E connection method. The session established with the TN3270 server comes from an unnamed pool of LU's. The unnamed pool is identified by the 3270 screen size and extended attribute settings. For example, if you configure a 3270 model 2 screen size without extended attributes, the session will be established with an unnamed pool of LU's having the device type IBM-3278-2.

Specific
This connection allows connections to a specific name LU pool, or to a specific dedicated LU. A dedicated LU is basically an LU pool with a single LU in the pool. If you select the Specific option, you must also enter the Resource Name that corresponds to the name of the dedicated LU or LU pool.

Resource Name
This is the device or pool name used by PASSPORT and the TN3270E server to identify and establish a connection to a specific LU or LU pool. Your system administrator must give you the correct information to enter here.

Extended Attributes
This configuration option determines whether or not extended attributes will be displayed. Extended attributes includes seven-color display, underline and reverse video. Enable the Extended Attributes check box to enable these features.

TN3270E Response Support
This option determines whether or not TN3270E Responses are supported during TN3270E terminal emulation. For TN3270E display sessions this setting is usually off.

TN3270 Non-SNA Command Chaining
Enable this option if connecting through a Visara controller. The Visara controller requires the TN3270 client to do the 3270 command chaining required by Non-SNA Master Console operation. If not connecting through a Visara controller, this option should be disabled.

Scroll Back Buffer (n) Lines
This option allows you to activate the history log which stores data (in lines) that are no longer displayed on the screen.  You can then use the scroll bar on the right side of the PASSPORT window to scroll back and view previous host screens. The default number of lines in the history log is 24. However, you can increase this log to a maximum of 2000 lines.