We have over 60 NVX endpoints installed in a building and a few weeks ago the audio streams stopped working on the NVX-351 and NVX-360 units, but still work on the E20 units. Video streams still work on all the units, but the audio streams just disappear from the stream list in Q-SYS Designer (the cores do the audio routing and processing for the building). If we subscribe to video and audio on a decoder connected to a TV via HDMI there is video but no audio as well. A reboot brings the stream back for 3-5 minutes and then poof! Gone again. IGMP snooping is enabled on all the switches, as is QoS, and no changes were made recently on the network configuration or other devices, so we're all a little baffled.
