The purpose of the section "Message Channel" is to provide the system administrator with policy settings that specify the default and secondary channels that are used to send messages to users.
This option determines the main delivery channel for sending emergency codes to the user;
SMS Emergency Codes are to be sent to the User's mobile device as a text message.
SMTP Emergency Codes are to sent to the User's email account.
Twitter Emergency Codes are to be sent to the User's Twitter account.
This option determines the secondary delivery channel for sending emergency codes to the user;
SMS Emergency Codes are to be sent to the User's mobile device as a text message.
SMTP Emergency Codes are to sent to the User's email account.
Twitter Emergency Codes are to be sent to the User's Twitter account.