By open, I was referring to the fact that not all z/OS Lpars are
running TCPIP (Those not may well be very few) and all should be
firewalled to some extent.

   I have to admit I've never tried from a native 3270, but when logged
on to one Lpar's TSO/ISPF via my emulator(we currently use QWS from
Jolly Giant), the command TSO TELNET ipaddr easily reaches the TN3270
server in another Lpar, shows the MSG10 screen and lets me logon.
   I first used this doorway via the Hipersocket link when the
SEGMENTAIONOFFLOAD issue of the OSA cards bit me in the posterior. Now
it's helpful as I move to multiple stacks in our multiple security
zones. 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Chris Mason
Sent: Thursday, June 26, 2008 4:50 AM
To: [email protected]
Subject: Re: TN3270 *from* a host??

Dave

Please be more specific about what you actually achieve here. "the
command 
TSO TELNET ip address will reach the TN327o server running on a TCPIP
open 
z/OS LPAR" is not in dispute - with or without the "open" whatever you
may 
mean by that, perhaps the z/OS UNIX TELNET server (otelnetd). Do you 
eventually enter your TSO commands one line at a time with no support
from 
ISPF?

> what do you think you're reaching when you use (what ever TN3270) 
emulator you're using on your Window$ desktop?

Typically, you are using the so-called TN3270 function and your
TN3270(E) 
client (from whatever "desktop" platform) will be relying on 3270
emulation not 
(previously?) available from the TELNET client function supplied by the 
Communications Server IP component.

Chris Mason

On Thu, 26 Jun 2008 00:22:57 -0700, Gibney, Dave <[EMAIL PROTECTED]> 
wrote:

>I do it on occasion between our LPARs (over the Hipersocket link :),
but
>yup the command TSO TELNET ip address will reach the TN327o server
>running on a TCPIP open z/OS LPAR.
>
>Actually, what do you think you're reaching when you use (what ever
>TN3270) emulator you're using on your Window$ desktop?

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