HCF is a special VTAM application that allows terminal users in an SNA network to access applications residing on an 8100 processor. An 8100 is not a true SNA host, because it does not allow an 8100 application to be a primary logical unit (PLU). HCF executes on the mainframe and acts as the PLU for both the 8100 processor and the accessing terminal.
There are two different 8100 operating systems, DPCX and DPPX. Both operating systems have a slightly different relationship to HCF and require HCF to have a slightly different relationship to its terminals. Because this product acts on behalf of 8100 terminals, you need to perform some special customization tasks when you set up the product to use HCF.
Note: HCF may also be used to contact an AS/400 machine running DHCF support. DHCF requires the logmode to have the query bit set to zero in the PSERVIC. The standard logmode T3278M2 is suitable for this purpose and should be specified in application session options in the Modent name field of the User Maintenance Detail panel or the Profile Table Detail panel.
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