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 difference between Outbound and Inbound Calls is that, Outbound Calls is the one that the agent should dial so they can talk to the person while Inbound calls is the one that the agent answer when someone in calling.
Difference between Automatic and Automatic (Delayed Start) is that Automatic option lets the concerned service to get started immediately after OS boots. Automatic (Delayed Start) option lets all services of OS to get started first and then after a brief delay starts the concerned service. After reading above, I decided to set SQL Server Services startup option to Automatic (Delayed Start). And that proved disastrous.