Checking for a faulty ACU or modem

The following are two methods for checking whether the ACU (Automatic Call Unit) or modems are working correctly:

• To display a list of queued requests, the time of the last request attempt, and the contact status, enter:
  
  uustat -q

• To use a specific line and print debugging information during the contact attempt, enter:
  
  
  cu -x9 -lttynn phone

See also ``Troubleshooting modems'' in the SCO OpenServer Handbook.