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SNA Distributed Host Command Facility

The HP SNA Distributed Host Command Facility/iX (HP

SNA DHCF/iX) software product provides IBM mainframe

users who use IBM 3270 display stations with interactive

access to an HP 3000 Series 900 system. Together with

the IBM Host Command Facility (HCF Version 2) product

on the IBM mainframe system, SNA DHCF/iX gives IBM

3270 display station users the capability to run many

applications on the HP 3000 system. These applications

include TTY-mode and VPLUS applications.

SNA DHCF/iX provides the data conversion services that

translate output between applications on the HP 3000 and

the IBM 3270 datastream required by IBM display stations.

SNA DHCF/iX enables IBM 3270 display station users to

access the HP 3000 system over their existing SNA, Token

Ring, or X.25 network. SNA DHCF/iX requires the

installation and use of the SNA/SDLC Link/iX (30292B and

A5563A), SNA/Token Ring/iX (J2167B)*, or the SNA/X.25

Link/iX (36939B) product (referred to jointly as SNA

Link). SNA Link products manage the physical link to the

IBM mainframe and implement the datacomm protocols in

the lower three layers of SNA.

* SNA/Token Ring Link/iX (J2167B) requires MPE/iX

release 5.5 Express 5 or later, or MPE/iX release 6.0

Express 1 or later.

Host Command Facility

SNA Link(s)

SNA

Other HP

DHCF/iX

SNA Services

HP 3000/iX

IBM S/370

Mainframe running

Communications

Controller

SNA DHCF/iX

Logical Session

IBM 3270 Display Stations

Features

• SNA DHCF/iX provides IBM 3270

display stations with HP terminal

capabilities including support for TTY-

mode (simple ASCII) applications and

many VPLUS applications.

• VPLUS has been optimized for

applications used with SNA DHCF/iX;

VPLUS forms can be compiled into

IBM 3270 terminal formats prior to

runtime.

• SNA DHCF/iX provides HP terminal

emulation support for screen sizes of

24, 32, or 43 lines for TTY-mode

applications. VPLUS applications are

supported with screens of up to 24

lines less any lines required for a

window line or softkeys.

• In VPLUS applications, SNA DHCF/iX

supports HP terminal softkeys (as PF

keys) and a "window" line on IBM

3270 display stations using the

bottom three lines of the screen.

• One MPE/iX session is provided for

every SNA DHCF/iX user; each SNA

DHCF/iX session appears as a

Network Services Virtual Terminal

(NS VT) session.

• SNA DHCF/iX supports the HP "Break"

and "Control-Y" keys.

• SNA DHCF/iX can support up to 64

simultaneous sessions per SNA Link

node. Using multiple SNA Link nodes,

SNA DHCF/iX's session count is

limited only by the number of LDEVs

available on the HP 3000

• Other HP SNA Service products are

supported over the same SNA Link;

each SNA Link can support up to

64 Logical Unit (LU) sessions. The

maximum line speed supported by

SNA Link is 64 KB/s.

• SNA DHCF/iX users can access

HP MM II applications on the

IBM

HP 3000.

3174

• SNA DHCF/iX provides a full screen,

ISPF-like editor for use by

HP DeskManager users.

• SNA DHCF/iX contains a

comprehensive and flexible logging

facility that records SNA DHCF/iX

session and error messages.

HP 3000

Bus ness

Servers