Voice is a basic service and subscribers expect nothing less than constant availability and high quality. Unfortunately, due to technical complexity of IMS-based systems ensuring high quality of VoLTE service is a real challenge for the operators.

VoLTE Service Assurance Monitoring:

• Monitoring and Troubleshooting VoLTE Service Quality during roll-out and later usage
• Monitoring of:

• IMS traffic to detect sessions and analyse service performance
• media streams to evaluate transport quality
• EPC signalling to analyse transport sub-system performance
• LTE to access quality of radio interface

• Correlating all above, both Control Plane and User Plane
• Entire signaling call tracing
• Full coverage of ALL calls with configurable sampling policy
• End-to End call flow in one display (tables or ladder diagrams)
• Detecting Call Drops and differentspeech quality impairments
  (amplitude and VAD clipping, clicking, echo, SNR, etc)
• Alarms for Customer issues and network element performance