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the competitive telecom industry, quality of service is quickly becoming a market differentiator, and customer churn is a major concern. As operators make the transition to IP networks, they need tools that enable them to quickly identify and resolve VoIP call-control problems to ensure QoS to protect their customer investment.

Maintaining voice quality also is critical to upholding SLAs. For crucial customers, operators need equipment that allows them to proactively manage service quality in real time, alerting them to “near misses” so quality issues can be addressed before SLA violations occur. Defining real-time alarms on traffic conditions, setting thresholds and implementing KPIs and key quality indicators (KQIs) are critical capabilities to be taken into account when evaluating a network monitoring solution.

Conclusion
It is a given that telecom networks will evolve gradually over time, requiring operators to interwork a myriad of network applications, services, technologies, and protocols. The key requirement for providers in this hybrid environment is maintaining quality of service to proactively manage the subscriber experience.

To ensure QoS, operators need a single monitoring solution that provides a holistic view of their entire network – one that supports both existing as well emerging technologies and protocols. As new services and network elements are rolled out, real-time visibility into the networks is essential to understanding and tracking performance and subscriber behavior. The ability to trace a single transaction, call or session end-to-end across different domains is critical to understanding and troubleshooting the interaction of network elements.