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Third-party modem pinout?

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The Question is:

I want to connect a US Robotics 56K modem to a decserver 200.  Will a straight
 through DB25 male to female cable work?

The Answer is :

  Please see the existing discussions of modems -- the OpenVMS Wizard
  is not particularly familiar with the wiring required by various
  third-party modems, so the particular pinout is unknown.  That
  said, this information is simple to determine using brute-force
  techniques, and can also be determined via use of a diagnostic and
  testing device known as a serial line breakout box.  Again, there
  are extensive discussions of modems here in Ask The Wizard, and
  there are various pinouts listed here and in the OpenVMS FAQ.

answer written or last revised on ( 6-FEB-2001 )

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