[Fwd: Re: Communications]

[Neil Palmer <NPalmer@xxxxxxxxxxx>]

Forgive me if you've seen this before, but I didn't see my reply come
back from the list, so I'm resending it.
...Neil

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• Subject: Re: Communications
• From: Neil Palmer <NPalmer@xxxxxxxxxxx>
• Date: Wed, 09 Jul 1997 19:06:47 -0400
• Organization: NxTrend Technology - Canada

Mike Windbeck wrote:


"I'm an AS400 RPG programmer not a AS400 communications person but have
been given this task.  We
have customers that we need to do communications with. What my company
has been doing is asking
them for their exchange id on their line and filling it in here on the
controller.  Also the
controller on the their end has our exchange id from our line.  My
company wants to have a
controller and device for every customer on our AS400.  The way we have
them create the line is
with the CRTLINSDLC command and the EXCHID keyword as (*SYSGEN).  The
problem is we are getting
customers with the same exchange id's.  I realize that the exchange id's
must be unique the
current way the line and controllers are created but there may be a
better way and I do not know
what it is.   I must be looking at the wrong area in the AS400 Redbook
softcopy library on CD
because I have yet to find a way around this issue.  Suggestions?"

The exchange id's will not necessarily be unique.  We had two customers
who ended up with the same EXCHID when created with the *SYSGEN default.
It USED to use the last 5 positions of the serial number.
In Canada, the early 9404's were made in Mexico and the serial number
started with 78.  The 9406's were mad ein the US and the serial number
started with 10.  We had a 9404 & 9406 customer taht had the same last 5
positions of serial number, and *SYSGEN created the same EXCHID.
We just manually changed one of our customers controllers on our
machine, and the matching customers line description on their machine,
to make it unique.  (You can't changed the EXCHID, you must COPY the
existing line/controller from WRKLIND or WRKCTLD and before entering to
create the new one delete the old one from another session.  When you
recreate the controller, make sure you attach the existing device to it
- or just COPY & recreate that too).

Note that with more recent AS/400's (Black boxes) the last 5 positions
of the serial number are now NOT necessarily valid hexadecimal numbers. 
They can contain ANY letter, so *SYSGEN now uses some algorithm to
create the EXCHID if the serial # contains a letter above 'F'.

-- 
... Neil Palmer                                      AS/400~~~~~      
... NxTrend Technology -Canada       ____________          ___  ~     
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