The SET PHONE_NUMBER command sets the phone number of the Customer
   Support Center for a particular customer site, allowing the customer
   notification mail message to provide the customer with the correct
   number to call for service.

   Change the phone number in interactive mode.  Once changed,
   execute the SAVE SYSTEM SETTINGS command to save the
   phone number.

   The current phone number setting can be seen by executing the
   SHOW PARAMETERS command.

   SET PHONE_NUMBER phone-number

   phone-number:        Is the valid CSC phone number.