Hi Manjunath,
There might be several factors affecting the performance of WebRTC in certain situations.Long roundtrip times, packet losses or substantial jitter count will defintely have an impact on overall audio quality.
If you've gone through the Genesys Cloud WebRTC Diagnostics app (https://help.mypurecloud.com/articles/run-the-genesys-cloud-webrtc-diagnostics-app/) and the diagnostics come clean, you may refer to some additional troubleshooting steps offered through the resource center, particularly through this link -
https://help.mypurecloud.com/articles/troubleshoot-genesys-cloud-webrtc-phone-admins/.If the issues persist, then please do not hesitate to open a case with Genesys Product Support so that our engineers may obtain call samples and analyze the underlying causes of any audio quality issues that you are experiencing and propose a resolution.
------------------------------
Gabe Ladios
Genesys - Employees
------------------------------