EXFO Call - VoIP and IMS services testing

An advanced active testing and live call signaling and media analysis application providing comprehensive visibility into the performance of VoIP, VoLTE, IMS rich-media and video call traffic

IMS rich-media voice and video support

EXFO Call’s active testing and live call performance analysis applications feature full support for IMS-based rich media services, including 3GPP rich communications suite (RCS) specifications.

IP voice and video media quality is continuously measured by a full set of RTP metrics, including RTP stream volumes, codec utilization, bandwidth, average and burst packet loss and more.

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 and POLQA measurements are also available for active performance analysis.

Video media performance is supported by identical raw RTP metrics, but also features proprietary video quality index (VQI) algorithms to produce a single metric view of video media performance.

Active performance monitoring

Deployed in conjunction with EXFO’s BV-1, BV-110 and/or BV-3100Active Verifiers, EXFO Call active performance monitoring is an integrated component within the EXFO Worx central-site software engine providing 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.

Key features:-

  • Comprehensive active testing and live call analysis and correlation application
  • Full support for IP voice (VoIP) and IP video calling
  • Integrated IP multimedia subsystem (IMS), VoLTE and rich communications suite (RCS) support
  • Integrated VoLTE support, based on GSMA IR.92 including IPSec and AKA authentication
  • At-a-glance dashboards and historical metrics reporting
  • Per-session rich call quality records with integrated end-to-end call-flow diagrams
  • Integrated call failure analysis and troubleshooting tools
  • Open APIs for seamless third-party OSS integration
  • Complete synergy with the EXFO Worx family of service assurance applications


  • Voice service assurance
  • IMS & RCS service assurance
  • Video service assurance

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