Creating a Video Call QoE Test

You can create a video call QoE test and collect video call metrics from the test report and analyze them to improve call quality. Quality metrics such as jitter, latency, packet loss, and video frame rate are displayed in addition to call details. This information is displayed for both participants in the call.

Complete the following steps to create a video Call QoE test and view the video call QoE report:
  1. On the Navigation bar, click AI Assurance > Network Assurance > Video Call QoE. The Video Call QoE page is displayed.
  2. Click Create Test Call to create a test call. The Create Test Call page is displayed.
  3. For the Test Call Name, enter a name and click Create. The Test Call Details page is displayed.
  4. Click Copy Link to copy the Zoom meeting link displayed in the Call Deatils section.
  5. Click Done.
  6. Click Test Call Name to display the Video Call QoE Test Report page.
Video Call QoE Test Report Page

The Video Call Report contains the following components:

  • Participants Details table
  • Zoom Call Statistics tile

Participants Details Table

The Participants Details table displays exhaustive information about the call, such as the client MAC address, participant name, IP address, network type, AP name, AP MAC address, SSID, radio frequency, join time, leave time, and Wi-Fi connection quality. You can select the MAC address of the client for the participants by clicking the Edit icon () in the Client MAC column. You can also pause the pointer over the status capsule in the Wi-Fi Connection Quality column for more information about RSS, SNR, throughput estimate, and average MCS (downlink). A video call of good quality is displayed as a green capsule with text "Good" in the Wi-Fi Connection Quality column, a poor quality call is displayed as a red capsule with text "Bad", and an average quality call is displayed as a gray capsule with text "Average". You must click the Select Client MAC icon, and select the client for each participant to view the Wi-Fi statistics.

To view the troubleshooting information, click AP MAC attribute. The Client Troubleshooting Page is displayed. For more information , refer to Client Troubleshooting page.

To view the AP details report, click AP attribute. The XXX page is displayed. For more information , refer to AP Details Report.

Zoom Call Statistics Tile

The Zoom Call Statistics tile provides time-series graph and table representation of jitters, latency, packet loss, and video frame rate experience in the call. Pausing the pointer over the time-series graph at a particular point displays the details of the respective quality metric at that time during the call. You can include or exclude the Tx and Rx values of both audio and video for each quality metric in the call statistics by selecting or deselecting the respective traffic type.
Zoom Call Statistics: Time-series Graph
  • Jitter: Displays jitters produced during the call in milliseconds (ms) for both participants for the duration of the call. The participant with lower jitter values experienced better call quality.
  • Latency: Displays latency (delay) produced during the call in milliseconds (ms) for both participants for the duration of the call. The participant with lower latency values experienced better call quality because there was minimum or no delay in audio and video transmission.
  • Packet Loss: Displays the percentage of data packets lost during video and audio transmission for both participants. The participant with lower values experienced better call quality because there was minimum or no data loss during audio and video transmission.
  • Video Frame Rate: Displays the number of video frames transmitted and received between both participants during the call. If the video call was successful for both participants, these values will be the same. The participant with lower frames per second experiences poor video quality.