MS
SMPP Application
SMSC MO SMS
If the message is terminated to a SMPP shortcode, check if the operator has configured a validity period for application terminated messages. If operator has configured a validity period for application terminated messages for the shortcode then use this validity to deliver the message. Message Delivered with operator configured validity for shortcode
Application
SMSC
MS
MT SMS
If the message is originated from a SMPP shortcode, check if the operator has configured a validity period for application originated messages. If incoming validity is NULL then use the operator configured validity for application originated messages. If incoming validity is not NULL then use the operator configured validity for application originated messages only if the “Override for Application Originated” check is enabled.
Message Delivered with operator configured validity for shortcode