Regarding: "Once you have the READY prompt you *ARE* logged on to TSO."
I think this points out a misconception about mainframes from people that are used to work with *nix systems. The question in this thread was: " (I always thought that TN3270 was pre-requisite for anybody) to logon via TSO" I remember a question in another tread: "How do I logon to the mainframe?" The big difference to notice is: You logon to a *nix system via Telnet or so. You don't logon to a mainframe. You logon to an application on a mainframe. So, you don't logon *via* TSO, you logon *to* TSO. Maybe this helps in terminology misunderstandings. Kees. -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Staller, Allan Sent: Monday, March 17, 2014 15:36 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Can we logon to TSO witout having TN3270 up ? Rephrasing: TN3270 is merely TCPIP on one side and VTAM/SNA on the other... TN3270 receives TCPIP requests on one side and translates to VTAM/SNA on the other. (BTW, VTAM also supports BISYNC). Other points: Once you have the READY prompt you *ARE* logged on to TSO. TELNET (dnsname or ip addr) invokes a TCPIP connection to the target, thus would require a TELNET or TN3270 server on the target. TN3270 used to be a part of the TCP/IP address space, but was moved (mandatory) to a separate address space circa z/OS 1.9. <snip> >VTAM is the pre-req, not TN3270. > >It depends on the method of *TERMINAL* attachment. If via VTAM, TN3270 >is not needed for anything/ > >TN3270 is merely TCPIP on one side and SNA on the other... > "VTAM"? "SNA"? I don't know the distinction. And no one has mentioned that it's possible to log on to TSO (the posed question) at the "READY" prompt with TELNET, but without TN3270. (Or is TN3270 part of the TELNET daemon nowadays?) </snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
