A few days ago we migrated all the virtual machines of telephony to Cisco Business Edition 6000M (M5), after that it began to present lost voice packets intermittently in both JABBER and IP phones.
I would like to know if anyone has had this problem before and if they could solve it?
1. Run packet captures on the user end who are facing voice quality issues and analyze for any breakage in RTP streams.
2. Determine path between affected user's device and gateway from which the call was delivered to the user. Analyze this network path to see for any clues, like packet drops, errors on any interface, any broadcast messages in the network path etc.