Monitoring
iTextPRO provides comprehensive monitoring tools to ensure optimal SMS delivery performance and system stability. This includes real-time Live Monitoring for traffic insights and a robust PDU Logger for deep message-level analysis.
Live Monitoring
The Live Monitoring module in iTextPRO dynamically tracks and analyzes key data points related to SMS traffic, enabling real-time decision-making for routing and performance optimization.
Key Benefits
- Proactive Traffic Management – Manage SMS traffic dynamically based on live data.
- Optimized Routing – Make informed routing decisions to improve delivery rates.
- Efficient Resource Allocation – Allocate resources strategically during peak hours.
- Enhanced Performance – Improve responsiveness and throughput with real-time insights.
In summary, Live Monitoring ensures users have up-to-the-minute visibility into SMS traffic flow, especially during high-demand periods.
PDU Logs
iTextPRO employs a PDU (Protocol Data Unit) Logger to capture and log every message entering or leaving the SMSC. This tool is vital for troubleshooting, monitoring, and maintaining system health.
Key Features
- Real-time Message Journey – Logs every message in real time for immediate analysis.
- Filtering Capabilities – Trace the journey of a message with one click.
- PDU Type Support – Inspect SubmitSM, DeliverSM, Bind, Unbind, and more.
- Visibility & Retention – Logs follow the admin time zone and are retained for 3 days.
- Upstream Traffic Inspection – View message flow by selecting gateways from a drop-down list.
- Troubleshooting Support – Quickly diagnose delivery or SMPP session issues.

Usage Guidelines
- Access the PDU Logger from the iTextPRO interface.
- Apply filters to isolate and inspect specific messages.
- Use Upstream traffic logs to verify message journeys.
- Perform regular monitoring to maintain system reliability.
Verbosity Levels in PDU Logging
iTextPRO’s PDU logging supports multiple verbosity levels, providing detailed insights into communication between iTextPRO and SMPP gateways.
| Verbosity Level | Purpose | Action |
|---|---|---|
| Bind Request | Initiates SMPP binding | iTextPRO sends a request to connect to the SMPP gateway |
| Bind Response | Confirms SMPP binding | SMPP gateway responds to the bind request |
| Enquire Link Request / Response | Health check of SMPP session | iTextPRO sends request every 30s; gateway responds |
| Submit_SM Request | Message submission request | iTextPRO sends an SMS to the SMPP gateway |
| Submit_SM Response | Submission acknowledgment | Gateway responds to message submission |
| Deliver_SM Request | Delivery Report (DLR) reception | SMPP gateway sends delivery status |
| Deliver_SM Response | Acknowledgment of DLR | iTextPRO confirms receipt of DLR |
| Unbind Request | Session termination | iTextPRO or gateway initiates unbind request |
Importance: These logs give administrators a granular view of message flows, helping detect, diagnose, and resolve issues efficiently.
With Live Monitoring and PDU Logging, iTextPRO empowers administrators to maintain a highly reliable SMS delivery system, proactively detect issues, and optimize traffic in real time.