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Host Connection Program Overview

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Chapter 1. Host Connection Program Overview

The Host Connection Program is a 3270 connectivity application for the AIX environment.

The Host Connection Program (HCON) emulates a subset of 327X functions and features,

and it allows end users at AIX terminals to connect to an IBM System/370 host and appear

to the host as an attached IBM 3270 Display Terminal or printer. HCON facilitates file

transfers between the workstation and the IBM System/370 host, allows printer emulation,

and provides High-Level Language Application Programming Interface (HLLAPI) support for

user-provided workstation applications to communicate with 3270 sessions.

HCON connectivity can be:

• System Network Architecture (SNA) connection in a Type 2.1 low-entry networking (LEN)

node attachment

• Distributed Function Terminal (DFT) SNA attachment to an IBM 3274/3174 or IBM 9370

Workstation Subsystem Controller

• Transmission Control Protocol/Internet Protocol (TCP/IP) Telnet 3270 connection

• DFT Non-SNA attachment to a 5088/6098 Graphics Control Unit.

The SNA Node T2.1 and TCP/IP capability can operate over a wide area network (WAN),

allowing users at a remote work group location access to the services and facilities of an

IBM System/370 or System/390 Host. This protocol also supports the IBM Token-Ring or

Ethernet network, which allows users to access these same services and facilities over a

local area network (LAN). The coax DFT attachment uses the 3274/3174 in both SNA and

non-SNA mode and supports up to five sessions per IBM 3270 Connection Adapter.

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Bull DPX/20 Installationsanleitung Seite 17