escape-character — line
The system escape character
This command defines the character that terminates a running command. The default, as specified in the hot-key listing, is Ctrl-^ (Control+Shift+6 on most keyboards).
ascii-number must be the decimal value of the character you want to use. The Break key cannot be used as an escape character.
no form of the instruction returns the escape character to the default.
The following commands set the disconnect character to Ctrl-C, which has a decimal value of 3:
***** Welcome to Sphinx *****Router(config-line)#
Escape key is Ctrl-CRouter(config-line)#