Since you can do TCP/IP over any RS232 line, ethernet is not always
used. "Standard Comm" to me is RS232 SDLC which every box I have ever
seen has. Since the RS232 can be defined as sync or async, you could
have been using the RS232 and not a ethernet adapter.....

I'm not really sure how the DDM over TCP/IP even works, I would be of
no help to you. wrote:
> Our standard comm line is an Ethernet line.  What is your definition of a
> standard comm line?

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