On Mon, 9 Jan 2006 13:59:27 +0100, Chris Mason <[EMAIL PROTECTED]> wrote:

>Well, I have been doing some Googling and I now see what your - and
>Terry's - system is all about. It appears that I was correct in guessing
>that "port 3270" enables you to be pretending to be a local non-SNA
>channel-attached 3270 display device represented in VTAM by a LOCAL
>statement necessarily using a USS table with USS message text consisting of
>the 3270 data stream. It seems that FLEX-ES provides a TELNET 3270 server -
>what Terry calls the "Telnet Listener" - which provides the appearance of
>this local non-SNA channel-attached 3270 display device to the supported
>operating system, in this case z/OS.

FLEX-ES provides something called the 'Terminal Solicitor' which gives you
access to local non-SNA terminals which are defined in the configuration
file. To use the 'Terminal Solicitor' you would telnet to port 24 of the
host operating system. x3270 is the standard 3270 emulation package which is
installed with FLEX-ES and you can connect directly to your S/390 OS from
the laptop by doing a telnet to localhost (or 127.0.0.1) which will give you
the first USSTAB in your VTAMLIB concatenation.

If however you have configured your system so that an ethernet adapter is
emulating, for example, a 3172 then you can directly telnet in to the IP
address of you S/390 OS, which would by default be port 23. Once again you
will get the first USSTAB in your VTAMLIB concatenation unless you have
created a new USSTAB for TCPIP and modified your TCPIP PROFILE to point to
this USSTAB. Exactly like 'big iron.'

If anyone is using port 3270 I suspect they are using Hercules.

Sebastian.

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