Since nonessential components are shut down, some energy is saved, but the awake RAM allows the PC to come to life much faster than it would if it were turned off or in hibernation mode. For more details, see How to Change Sleep State Settings in Windows 7.
The major difference between inbound and outbound is the call flow direction. In inbound, the call is done by the customer for services such as technical support, data entry, messaging, order taking, appointment and scheduling and more.
It depends on when the inbound flight carrying the package arrives and when the outbound flight departs. It only takes a few minutes from when the package is removed from the container in which it was sent on the inbound flight for it to be ready to be loaded in to a container for the outbound flight.