Network Optimization Fault Resolution QoS Monitoring Network Assessment

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  • Combines software, appliance and SaaS
  • Complete platform to deliver remote management service 
  • Transforms break-fix into managed services
Quality of Experience Needs Management

Streamline Quality of Experience Monitoring

Users care a great deal about unified communications as a tool to accelerate workflow and reduce latency in business processes, but they don't want to experience the complexity of the implementation. That's where measuring and managing services and quality-affecting problems within the view of the Quality of User Experience really matters. As companies migrate or upgrade or experiment with IP telephony, the factors that contribute to the users Quality of Experience are often overlooked, but seldom ignored.

The five factors in Quality of Experience are:

  • User expectations - the users' experience with IP telephony is most often compared to their experience with digital telephony and rarely compared to their experience with mobile telephony. 
  • Endpoint quality - the reliability, microphone, speaker, electronics and physical attributes of the phone, gateway or conferencing server defines the limit of the maximum quality attainable.
  • Network quality - the quality of equipment, the scope of network design, the quality and speed of network services and cabling can affect reliability, the range and performance of important quality of experience-affecting features. 
  • System-wide policies - the network and the applications and the endpoints are now all part of a single, enterprise-wide system affected by policy-based approaches to system-affecting choosing endpoint-to-endpoint compression levels may satisfy some corporate goal at minimizing bandwidth requirements, but often introduces degradation in audio quality of a session. 
  • Application-network interactions - introducing new, chatty applications on the network which in the past would only have meant a few-second delay in email server exchanges, can seriously impede voice call quality. IT departments need to appreciate how convergence changes the way they deploy new applications, update new applications and manage their infrastructures.

Quality of Experience depends on an in-depth reassessment of the methods for managing the network, operating the network and supervising new applications. 

Key Features:

  • Quality of Experience is measured, reported and analyzed
  • Solution hints are available through the dashboard's knowledgebase whenever Quality of Experience degrades
  • Administrators use templates to define the range of alerts and alarms for each severity class and under what circumstances related alarms should be grouped as single incidents
  • In Pre-Net Assessments, the quality of the user experience is predicted using RTP streams between Streamline Assessment agents
  • In Monitoring operations, every call is assigned a MOS based on call performance
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Factors of Experience

 

The five factors of Quality of Experience.

Measuring Experience

 

 METRIC  GOOD  WARNING  ERROR
 MOS  4.0 +  3.6 - 4.0  < 3.6
 Delay *  < 150 ms  150 - 400 ms  > 400 ms
 Jitter  < 1.0 %  1.0 - 2.0 %  > 2.0 %
 Packet Loss  < 1.0 %  1.0 - 2.0 %  > 2.0 %

 

Mean Opinion Score (MOS) speaks to the overall user  experience of a call, but is affected by many aspects of the call such as Jitter and Packet Loss. MOS is calculated while Delay, Jitter and Packet Loss are measured. * Delay does not affect MOS which focuses on audio clarity, but affects the quality of experience.