IBM 3174 Introduction

3174 Model 3R
Multiplexer Adapters supports a maximum of thirty two 3270 terminals and 24
ASCII terminals.
Customizing is performed with a control unit terminal attached to port 0 of the 3174.
Any
terminal can be attached to port 0 at other times. The Model 12R supports full
keyboard utilities.
Subsystem
online tests and problem determination are performed through a
control unit terminal attached to any port or multiplexer. This can be done without
interrupting other terminals that are attached to the 3174 controller. Offline tests
are performed through the 3174
control panel.
The customer can install certain features on this controller. They are:
Second diskette
drive
Token-Ring Network Gateway feature
Asynchronous
Emulation Adapter
20MB Fixed Disk Drive
Terminal Multiplexer Adapter
Storage Expansion
Concurrent Communication
Adapter
Type 3A Communication Adapter.
The 3174
Model 3R is designed to connect to an IBM Token-Ring Network. It
contains a Type 3 Communication Adapter that provides the ability for the
controller to operate on an IBM Token-Ring Network at 4Mbps. It has 1 MB of base
storage and one 5 1/4-inch, 1.2MB, high-capacity diskette drive.
If the controller
has one diskette drive and uses devices that require downstream load microcode,
a second diskette
drive or fixed disk must be installed. A four-port terminal
adapter that attaches IBM 3299 Terminal Multiplexers and Terminal Multiplexer
Adapters supports a maximum of thirty two 3270 terminals and 24 ASCII terminals.
Customizing is performed with a control unit terminal attached to port 0 of the 3174.
Any
terminal can be attached to port 0 at other times. The Model 3R controller
supports full keyboard utilities.
Subsystem online tests and problem determination are performed through a
control unit terminal attached to any port or multiplexer. This can be done without
interrupting other terminals that are attached to the controller. Offline tests are
performed through the 3174 control panel.
The customer can install the following features on this model:
Second diskette drive
Asynchronous Emulation Adapter
20MB Fixed Disk Drive
Encrypt/Decrypt Adapter
Single Link Multi-Host Support
Terminal Multiplexer Adapter
Storage Expansion
Type 1 Communication Adapter
Type 2 Communication Adapter
Type 3A Communication
Adapter
Concurrent Communication Adapter
(see note).
Note: If you want to install the Concurrent Communication Adapter on this
controller model, you must replace the 1.2MB diskette drive with a 2.4MB
diskette
drive or a fixed disk and have Configuration Support-B.
Chapter 3. Models of the 3174 Establishment Controller 3-5

IBM 3174 Specifications

General

Brand	IBM
Model	3174
Category	Controller
Language	English