The word Terminated means that the message is terminated (delivered) on a mobile device. It is also known as an Outbound SMS.
What is the difference between MT and MO messages?
Quite simply they are the start and end of an SMS message’s journey. MO stands for ‘mobile originated’ and is any message sent from a mobile device. Once delivered to the recipient it becomes an MT message i.e. a message delivered to a recipient via the MNO‘s infrastructure.