983daeae_eless_LAN_Controllers____Cisco_Table_1_Command_Mode_Summary_Exit_Method
[Mode] Line configuration [Access Method] While in global configuration mode, specify a line with the line vty or line console command. [Prompt] Controller(config-line)# [About This Mode] Use this mode to configure parameters for the terminal line. [Exit Method] 
To exit to global configuration mode, enter exit. To return to privileged EXEC mode, press Ctrl-Z or enter end.
Security Command Reference, Cisco IOS XE Release 3SE (Cisco WLC 5700 Series) - Using the Command-Line Interface [Cisco 5700 Series Wireless LAN Controllers] - Cisco