3270 controller simulation

Paul Koning paulkoning at comcast.net
Mon Nov 18 16:15:33 CST 2019

> On Nov 18, 2019, at 4:59 PM, Dave Wade via cctalk <cctalk at classiccmp.org> wrote:
> ...
> Thought I'd pass this on;
> Conversation between a caller and John Akers:
> CALLER:  Hello, John?
> AKERS:   Yes?
> CALLER:  John Akers?
> AKERS:   Yes?
> CALLER:  John F. Akers?
> AKERS:   Yeah?
> CALLER:  John F. Akers, CEO for IBM?
> AKERS:   Yes, what is it?
> CALLER:  John F. Akers, CEO for IBM in Armonk?
> AKERS:   Yes, that's right, what do you want?
> CALLER:  John F. Akers, CEO for IBM in Armonk, ...?
>    (etc. for a few more exchanges)
> AKERS:   All right, enough!  What is going on here?!
> CALLER:  Oh, not much John.  Just thought you would like to know what it
>         is like to talk over SNA.

Neat.  I vaguely remember being told that SNA had a 13-packet connect handshake -- unlike efficient transports (TCP, DECnet NSP) which have a 3-packet handshake.


More information about the cctech mailing list