If the printer or port is busy, the print service automatically retries later. This retry rate is 10 minutes if the printer is busy and 20 minutes if the port is busy. These rates are not adjustable. However, you can force an immediate retry by issuing an enable(1M) command for the printer. If the port or printer is likely to be busy for an extended period, issue a disable(1M) command.
The lpstat -p command reports the reason for a failed dial attempt. Also, if you are alerted to a dialing fault the alert message gives the reason for the fault. See ``Setting up printer fault alerts'' for more information.