Hi, we are having some issues with flow control on our BD 8800. The interface on the BD is connected to a carrier's Accedian ENID. When we put the circuit into production, we saw a lot of dropped packets on our interface using the "show port congestion" command. GTAC advised that we disable Flow-Control rx-pause and have the carrier disable flow-control. This worked and we have not seen any dropped packets on that interface, but now we have a new issue. Since we made the change, the video and voice quality for our Lync calls have declined tremendously. A report from the lync server for one of our calls showed a packet loss of ~45%. The utilization on the circuit is at 10% so im not sure why Lync would have an issue after flow-control was disabled. We have the DCSP enabled in our environment and we do have qosprofiles qp4 and 5 with the code points needed for video and voice, and the shared buffer is at 30%. From my understanding QoS only comes into play when the interface is overloaded which it is not.
Is there anything else that can be done on the interface to improve the quality for Lync?