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Sounds like a contention problem with me.  Are there settings in the PC
software to determine which is the primary and which is the secondary
station?  In the AS400 that is controlled on the line description for your
location and in the controller desc for the PC.  Which side is sending the
EOT or DLEEOT ('37' or '1037') to do the disconnect?
Carl Galgano
EDI Consulting Services, Inc.
540 Powder Springs Street
Suite C19
Marietta, GA  30064
770-422-2995
mailto: cgalgano@ediconsulting.com
http://www.ediconsulting.com
EDI, Communications and AS400 Technical Consulting

-----Original Message-----
From: Marv Noltze <mnoltze@execpc.com>
To: MIDRANGE-L@midrange.com <MIDRANGE-L@midrange.com>
Date: Monday, October 18, 1999 6:08 PM
Subject: BSC line problem


>This is a lengthy message about a bisynch line problem that I have IBM
>stumped on. My site communicates our AS400 to a remote site via a BSC
>line. We use an ICF file and an online COBOL program to send and receive
>small transaction files. The remote site I dial into is a PC running
>commercial 3780 communication software.
>  We dial in daily to receive a small file (@30 records). This works fine.
>The problem is every week we try to receive a larger file(same structure
>just more records, usually 1200). This larger file fails everytime.
>My communication trace shows I get about 4 packets of data and then the
>two computers go into a loop where the remote sends me a '2D' request and
>mine acknowledges with a '1070'. This repeats about 10 times until the
>AS400 gives up and end the transmission. The remote site's trace shows the
>same series of characters being exchanged. Level 2 of IBM support says my
>configuration is fine and they have no suggestions. I talked to the higher
>level support for the commercial software vendor of the remote site and
>they are equally stumped. Nobody has any further answers or advice. They
>all say all configurations are fine.
>  My question(s):
> Where do I go from here?
> Has anyone else experienced hangups with bisynch lines like this?
> I need to use a BSC line to be compatible with the remote site.
> Yes, I have reviewed the manuals but they don't offer a clue.
>Thanks
>
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