Real-time, passive VoIP quality of service analysis
Voice over IP is one of the most mission critical applications being deployed by IT organizations today. The roll-out of VoIP services is accompanied by the expectation of toll availability and sound quality. It is therefore imperative that IT organization have the proper tools to monitor the QoS of VoIP calls during and after implementation on the network. OptiView Protocol Expert with the VoIP option and OptiView™ Link Analyzer monitor calls in real-time and use advanced algorithms to grade the voice quality being delivered. Real-time QoS assessments are generated for every call without the need to perform detailed decoding. User configurable alarms notify engineers when degradation of dropped calls become an issue.
"Quality Grading" thresholds can be set for key VoIP QoS parameters, such as R-Factor, Jitter, Packet Drop and Call Setup Time. The number of calls that fall within each Quality Grade is shown for key QoS parameters. Detailed VoIP call information for every call is clearly shown in a tabular view to allow quick identification of the route taken and the gateway involved, allowing you to troubleshoot quickly.
As networks evolve and traffic patterns change with new applications and users, VoIP QoS can often degrade in imperceptible steps, or extreme failure. An initial VoIP deployment might run fine during its early days, but incremental changes to the network can slowly erode VoIP performance or completely eliminate availability. OptiView Protocol Expert and Link Analyzer ensure visibility of VoIP performance and allow quick resolution of issues due to network growth and development.
Performance you can rely on
QoS analysis of VoIP traffic requires accurate timing measurements and high performance traffic monitoring regardless of the network load. Standard NICs do not have the accuracy and performance for the task, especially when the network is under high load. The OptiView Link Analyzer uses custom ASICs to provide 25 nano-seconds of timing resolution and real-time monitoring without missing a packet, even at full duplex Gigabit Ethernet speeds.
Solve call set-up problems
The VoIP option provides detailed decodes of the most commonly used VoIP protocols including H.323, Cisco Skinny (SCCP), MGCP and SIP. Detailed information supports quick isolation of call setup problems. Combined with the easy-to-use single call filter and Call and Channel Table Views, call setup failures commonly caused by configuration errors, network equipment incompatibilities, or interoperability can be easily solved.
VoIP QoS problem alarm
VoIP QoS analysis is integrated into a powerful alarm/notification system. Calls exceeding QoS thresholds will trigger an email alert and auto-save captured data to ensure that problem traffic patterns are available for detailed analysis. For instance, when a call exceeds the Jitter threshold by a large number, the VoIP Option stops the capture session and saves the packets that displayed the problem, and then restarts the capture session to continue monitoring for other problem calls.
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