Mapping

ASCII

EBCDIC

819/037v2

819 ISO-8859-1 Latin 1

037 United States/Canada SHARE

819/273

819 ISO-8859-1 Latin 1

273 CECP Austria/Germany

819/277

819 ISO-8859-1 Latin 1

277 CECP Denmark/Norway

819/278

819 ISO-8859-1 Latin 1

278 CECP Finland/Sweden

819/280

819 ISO-8859-1 Latin 1

280 CECP Italy

819/284

819 ISO-8859-1 Latin 1

284 CECP Spain

819/285

819 ISO-8859-1 Latin 1

285 CECP United Kingdom

819/297

819 ISO-8859-1 Latin 1

297 CECP France

819/500

819 ISO-8859-1 Latin 1

500 CECP International

819/1047

819 ISO-8859-1 Latin 1

1047 Open Systems Latin 1

850/273

850 PC Latin 1

273 Austria/Germany

850/1047

850 PC Latin 1

1047 Open Systems Latin 1

1252/037

1252 Windows Latin 1

037 United States/Canada

1252/037v2

1252 Windows Latin 1

037 United States/Canada SHARE

1252/1047

1252 Windows Latin 1

1047 Open Systems Latin 1

1252/1140

1252 Windows Latin 1

1140 United States/Canada with Euro sign

Table 4: Supported codepage mappings

5.15.4 Examples

Example 1:

Set the codepage conversion table to the default.

CODEPAGE DEFAULT

Example 2:

Set the codepage conversion table to 437/500.

CODEPAGE 437/500

Example 3:

Activate the user specific codepage conversion tables.

CODEPAGE USER

5.16 CONKPALV (Console and telnet clients keep-alive option)

5.16.1 Function

The CONKPALV parameter specifies the tn3270 console and telnet client keep-alive option values that
control automatic detection of disconnected tn3270 / telnet client sessions.

This is a built-in feature of TCP/IP that allows detection of unresponsive TCP/IP connections and not idle
clients; the connection will not be terminated after the specified idle time. The 3270 sessions can remain
idle for a long time without any data being transmitted. The TCP/IP Keep-Alive feature only detects un-
responsive TCP/IP stacks. Thus, even if the 3270 client is completely idle, the systems TCP/IP stack itself
still should respond to the keep-alive probes sent from the Hercules end of the link. If it does not however,
then the TCP/IP connection is obviously down and the 3270 sessions at the Hercules end of the link are
terminated as a consequence.

Some older platforms may ignore all of the specified values and use platform specific values instead.

5.16.2 Syntax

Descriptive

()

Diagram

¬¬¬§¬¬¬¬¬¬¬ () ¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ÊÍ

()

5.16.3 Parameter

idle

The idle value specifies the number of seconds of inactivity until the first keep-alive
probe is sent. The default for the idle value is 3 seconds.

intv

The intv value specifies the interval in seconds between the probes if no acknow-
ledgement is received from the previous probe. The default for intv is 1 second.

count

The count value specifies the number of unacknowledged keep-alive packets sent
before the connection is considered to have failed. The default value is 10.

Note: On Windows platforms the count value is ignored and cannot be changed
from its default value of 10.