ITextPro logs each message entered in SMSC or going out is logged for troubleshooting, a large amount of data is generated via PDU logger.
iTextPro online PDU logger comes with a filter to trace the journey of any message in a single click for upstream [Gateway Vendor] and downstream traffic [SMPP User] and inspect the various types of PDU such as SubmitSM, DeliverSM, Bind, Unbind, etc. in real-time.