After a network update on other operator side, the inter network voice call quality remained poor.

Products

• VMware NSX

Issue/Introduction

After a network update on other operator side,  the inter network voice call quality remained poor. During troubleshooting there were no visible alarms or warnings on the SBC VMs, ESXi hosts and not much packet drops observed on vnics of the VM (SBC VM) 

Environment

3.2.3 

Cause

Issue was with voice application and there was no issue with VMware infrastructure

Resolution

To check and resolve the poor voice quality issue with application vendor