This will send a predefined sip text-message. When our phone receives such a message, it is displayed as a notification.
The current template itself for this key-type can be found here.
The key-type has the following parameters:
The number to where to send the message.
The identity from which to send the message.
The text of a the message.
The delay in seconds can be used to show a timer before the message is actually send.