TN3270e Server Manual

Introduction to the TN3270e Server
TN3270e Server Manual—422923-003
1-3
Clients
The TN3270e server does not support the following features:

ISO 8859/0 character sets

RFC 1041 (3270-Regime)

Exclusive opens of the TN3270e server
Clients
The TN3270e server clients are available for a wide variety of platforms, including
MS-DOS, Apple, DEC, IBM, and most UNIX systems. You can obtain TN3270 clients
from your LAN vendor, workstation vendor, or a third party.
Option Negotiation
The TN3270e server expects one of the negotiation sequences shown in Figure 1-1
and Figure 1-2.
During TN3270e server option negotiation with traditional TN3270 clients, the following
rules apply:

WILL and DO commands for a specific option can be exchanged in any order.

The TN3270e server responds with a WON’T command if it receives a DO
command for any Telnet option other than BINARY or EOR.

The client must accept a DO TTYPE command by sending a WILL TTYPE
response, and it must send WILL and DO commands for both EOR and BINARY
options.
Note. For details about the differences between the TN3270e server and the traditional
Guardian TN3270 server by feature, see Differences by Feature
on page 1-10.
Note. In Figure 1-1
and Figure 1-2, term-model is one of the supported terminal model names
listed in Appendix A, Terminal Models in SNAX/XF Mode
.
Figure 1-1. Option Negotiation Sequence With Traditional TN3270 Client
VST008.vsd
3270 DATA
WILL, DO BINARY
WILL, DO BINARY
SEND TTYPE
WON’T TN3270E
Traditional
TN3270 Client
TN3270e
Server
WILL, DO EOR
WILL, DO EOR
TTYPE IS term-model
WILL TTYPE
DO TTYPE
DO TN3270E