Hi Joseph Follow a link to explain it directly from Cisco:https://help.webex.com/en-us/article/n5m305x/Webex-Video-Integration-for-Microsoft-Teams 

Hello my friend.In this week , surprising everyone in our company, the bitrate was increased to up 70Kbps. Issue solved !

Hello josephhayman.We facing the same issue here and the issue seems between CVI x MS. Note that the audio protocol is the same used in Webex calls (Opus with variable bitrate) but via CVI the audio sent from room to MS cloud use mono type (around 32...