For a dial-out line, you may want to restrict outgoing calls to the evening when phone calls are cheaper. It is a good idea to allow a mismatch of say, 5 minutes, between your system clock and that of the phone company's.
You can specify the times when the local system is allowed to call the remote system, by specifying an access schedule. The schedule lists the days and the times of day when a remote connection can be made.
Restrictions can also be placed on the types of transfers that are allowed at specific times. Refer to the Grades(4bnu) manual page for more information.
To add an access schedule using the Dialup Systems Manager:
To allow access on a day, select that day in the Configured Out field and click on Add. The day now appears in the Configured In field.
You can change the information for any of the following fields:
A time range that spans 0000 is permitted. For example, a start time of 0800 and an end time of 0600, means that access is allowed at all times, except between 6am and 8am.
Also present on this screen is the Retry Interval button which allows you to specify the retry interval.