  New modems don't work? 
 The Question is:
 
I have 3 Hayes Optima 14.4 modems and tried to
switch 1 of them to a 56kbs U.S. Robotics
V.90 Sportster (external) and cannot get
any responses to "AT" commands....
 
The machine is a Vax 4500 running vms 6.1...
 
                       Thanks
 
 The Answer is:
 
  Please see existing modem troubleshooting discussions.
 
  This could be anything from speed to differences in wiring requirements.
 
