Chapter 5: Mini-Controller Configuration; Overview - Psion Teklogix 9150 User Manual

5.1 Overview

The network controller in a Teklogix system performs a number of important tasks.
One of these tasks is emulation: the translation of data between the protocol of the
host computer and the protocol used by Teklogix terminals.
The data which is sent from a host computer to a terminal to provide its display, and
returned to the host as a result of operations at the terminal, is called a data stream.
Host computers can provide data streams of various types to their terminals.
Teklogix terminals can directly accept only two types of data stream: TESS and
ANSI. TESS (Teklogix Screen Subsystem) is the proprietary data stream used by
Teklogix terminals. ANSI data streams are a standard type of data stream used by
wired ANSI terminals. Other types of data stream provided by the host must be
converted into TESS or ANSI before Teklogix terminals can work with them. This
translation is done by emulation software in a network controller.
The 9150 is equipped with emulation capabilities, allowing it to act as a mini-
controller. When a 9150 is configured as a mini-controller, Teklogix terminals can
emulate an ANSI, 5250 or 3274 terminal via a 9150 rather than through a 9400/9300
Network Controller.
Important: 9150s acting as mini-controllers are designed for small, low-
transaction sites. A 9400/9300 Network Controller is required for
systems that support more than 50 terminals.
Acting as a mini-controller, the 9150 can support up to 32 additional networked base
stations and up to 50 terminals. A 9150 mini-controller can also manage wireless
LAN configurations.
A 9150 configured as a mini-controller can support the following emulations:
• 5250 emulation using TCP/IP over an Ethernet or Token Ring LAN.
• 3274 emulation using TCP/IP over an Ethernet or Token Ring LAN.
• ANSI emulation using TCP/IP over an Ethernet or Token Ring LAN.
Note: The 9150 main parameters should first be set up as described in Chapter 3:
"9150 Main Configuration".

Chapter 5: Mini-Controller Configuration

Teklogix 9150 Wireless Gateway User Manual

Overview

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