ProVision:
1. Enter configuration mode
2. Configure the console inactivity-timer to the desired value in minutes (default is 0)
Comware 5:
1. Enter system view
2. Select the auxiliary interface
3. Configure the idle-timeout to the desired value in minutes (default is 10)
Cisco:
1. Enter configuration mode
2. Select the console line
3. Configure the exec-timeout to the desired value in minutes (default varies by IOS version)
The console timeout or idle timeout can be configured differently in each CLI, but all allow setting