IMS Rich-Media Voice and Video Support
Both the EXFO Call active testing and live call performance analysis applications feature full support for IMS-based rich media services, including support for 3GPP rich communications suite (RCS) specifications.
IP voice and video media quality is continuously measured by a full set of key real-time transfer protocol (RTP) metrics, including RTP streams volumes, codec utilization, bandwidth, average and burst packet loss, average and peak jitter, packet discard, and one-way and round-trip latency. Audio media performance is characterized on a per-stream basis using standardized ITU G.107 E-model algorithms to produce both R-Factor and MOS scores. Standardized PESQ measurements are also available for active performance analysis.
Video media performance is supported by identical raw RTP metrics, but also features Brix-patented video quality index (VQI) algorithms to produce a single metric view of video media performance.
Active Performance Monitoring
Deployed in conjunction with Brix BV-110 and/or BV-3100 Active Verifiers, EXFO Call active performance monitoring is an integrated component within the EXFO Worx central-site software engine the provides direct measurement of VoIP, IMS and video call network element performance. Network active tests directly measure underlying signaling and media transport performance, whereas service active tests directly measure service quality from network to subscriber and from subscriber to network. Features such as on-demand tests and media loopback tests provide direct methods to troubleshoot VoIP, IMS and video call functions if performance degradations are discovered.
Integrated Call Failure Analysis and Troubleshooting
Integrated call failure analysis instantly characterizes the presence and location sources of call routing and setup failures. Call search tools can then be launched to pinpoint detailed information, including source and destination numbers, MOS, duration, bandwidth, call setup and routing performance metrics for individual calls. Once offending calls are isolated, CQR records provide full per-call metrics and integrated end-to-end call flow diagrams for easy problem isolation.
Proactive Performance Alerting
Leveraging the capability of the EXFO Worx central-site software engine, EXFO Call administrators establish and monitor performance thresholds to proactively alert operational staff of call quality degradations, outages or abnormal calling patterns. Thresholds can be standardized network-wide or customized for individual locations, depending on business requirements.