Re: BSC line -- MIDRANGE-L

Joe,

        Let's back up.  I have been doing BSC interconnections since the
System/34 needed a Black Box converter to speak ASYNC via an RPG-TP BSC
connection.  Fortunately I have not had to do much of it lately as most
users, except some Banks have moved to other platforms.

        The RJE support in both the AS/400 and the Series/1 (What OS ?) is
client only designed to talk with an IBM Mainframe.  An the protocol flow is
another opportunity, who dials the link does not necessary specify the flow
of data, you need to look at the ENQ/ACK flow, and may need to do a dummy
line turn around on connection. You also need to ensure that you specify the
same Inter Record Separators (IRS) and block sizes.

        I will look around and see if I can find my tool kit library which
has a bunch of skeleton CLP and RPG for the 400 side. My Series/1 EDX stuff
is most likely on 8" floppy disk, which means Not usable.

        JMS,,,
Jeffrey Silberberg
CompuDesigns, Inc.
Atlanta, GA..

----- Original Message -----
From: <jleyden@co.la.ca.us>
To: <midrange-l@midrange.com>
Sent: Tuesday, November 13, 2001 3:57 PM
Subject: RE: BSC line


> Sorry, I couldnt get back earlier but I still need help, please.
>
> My problem is that only the "LINE" stays active (see below).
> I'm not an AS400 expert but I was told as displayed
> on the terminal, it is:
>
> LINE  --------------- ACTIVE
>   CONTROLLER -------- VARYON PENDING
>       DEVICE -------- VARYON PENDING
>
> and the application from BSC "LINE" is RJE.
>
> using my black box, RTS does not come high but when
> "LINE" is varied off and on, it does something runs,
> all lights lit mommentarily seeming to wait for some
> kind of response. Then in a few seconds the RTS drops
> and nothing again.
>
>
> Joe
>
>
> -----Original Message-----
> From: midrange-l-admin@midrange.com
> [mailto:midrange-l-admin@midrange.com]On Behalf Of Pat Barber
> Sent: Friday, November 09, 2001 7:00 PM
> To: midrange-l@midrange.com
> Subject: Re: BSC line
>
>
> Most dial modems are not capable of running full duplex on a two wire
> line. I know they advertise it, but it can't physically be done using
> two strands of wire. "Most" BSC uses a simple dial connection, although
> I'm still not clear on what the guys original problem is ........
>
> Alexei Pytel wrote:
> >
> > I think half-duplex operates in this way - raise RTS, modem should
respond
> > with CTS, send data, drop RTS, etc.
> > You may try full-duplex.
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