• Subject: Re: 5294 and 5821 modems
  • From: Larry Bolhuis <lbolhui@xxxxxxx>
  • Date: Thu, 13 Jan 2000 21:22:01 -0500
  • Organization: Arbor Solutions, Inc


> The settings on the 5294 are:
> field 1:  00
> field 2:  C1
> field 3:  0110000000
> The line description is setup as SDLC, 9600 NRZI - yes, duplex - full.
> The controller is *RWS, *SDLC, EXCID = 045000C1, stnadr - C1
> The device is *DSP, class - *RMT, type - 3180, Model 1.

  Well as I recall, Field1 of 00 means SDLC so that is correct.
  Field 2 of C1 means the Station address is C1, also correct.
  Field 3 0 means Leased line
          1 Means Full Duplex
          1 Means Point to Point
          0 means NRZI
          and the others don't matter much.

  Soooo, the config parameters you list are apparently correct.

> Questions:
>    How do you set up the 5821s for this environment?  We have them set per the
>    small user's guide but it does not explain how you set them for primary and
>    secondary modems.  I also tried to 7855 modems set for leased 9600 to no
>    avail.
>    When we vary on the line, the TD and RD lights flash momentarily on both
>    5821's and then the line fails in about 30 seconds.

  So it appears to be in the modems and I am clueless on those.  It would appear
that because you get some flickers the system is attempting communication but
some response by the modem is NOT what is expected so the line failes.  7855's
should also work just great in this environment.  One thing to check is if the
line is a 4wire or 2wire.  The modem needs to know this.  If it is a two wire 
may need to change the 5294 and the AS/400 to *HALF duplex.

  Sorry but that's about all the gray matter is giving up this evening!

 - LArry

Larry Bolhuis         |         What if it's True?
Arbor Solutions, Inc  |
(616) 451-2500        |  
(616) 451-2571 -fax   | 
lbolhui@ibm.net       |
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