robert@richp1.UUCP (Robert Miller) (02/29/88)
Distribution:
I am seeking suggestions on how to incorporate a Bridge Communications
CS/1-TCP-SNA Gateway Server, recently
installed on our LAN, to its
IBM host via a Polled Multidrop arrangement. Will be very appreciative
of any helpful hints.
Current setup has two IBM Model 3274 units, the output of each
connects to an input of a Teleprocessing Products, Inc. TP-2/4
Interface Sharing Unit (ISU). The ISU's output is connected to the
IBM host via a modem. Cables are all RS-232. The ISU uses the RTS
line to control the 3274 devices. This polled multidrop network is
working fine, no problems to mention.
The proposed setup adds a Bridge Communications CS/1-SNA Gateway's
output (also RS-232) to another input of the ISU. The ISU can handle
up to four input devices.
The problem is that the RTS line is locked high, or low depending on
how the CS/1-SNA parameters are set (we've tried several ways), and
thus the multidrop arrangement is rendered useless. To complicate
matters, we would rather NOT change the configuration setup of the
IBM host or 3274's. Since we know they work together, there should
be no reason to anyway, right?
Has any one encountered this before, or familiar enough with
Multidrop arrangements and the CS/1-SNA to help? Naturally, the
earlier this is up and running the better!
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"To open, cut along dotted line." ....:.......................................
: : Robert Miller @ ihnp4!richp1!robert
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