Command Line Interface (CLI) is a management interface that provides local access to a particular Avaya SBC security device for performing administrative and operational tasks. The tasks are executed by using various commands entered through a terminal emulator, such as SSH, or other commonly available serial applications like PuTTY. Ensure that you update to the latest version of PuTTY. CLI is available whenever an Avaya SBC equipment chassis is running. Security is provided through a combination of account login and user access privileges.