Hello, we have strange behavior using EX90 and EX20 Tandberg terminals in layer2 network. The network consists of one MCU unit, two tandberg terminals and some layer3 switches which are connecting it to the same VLAN. We tested it two different ways.
The first: MCU and Tandberg EX terminals are connecting through one Cat6506 and one 3750g-24 switches in between. There are three participant joined to the conference and image quality is good.
The second: We have added 3750-48 switch in the same scheme and image quality became poor. There was randomly dots and lines in the picture. Call statistics on the terminals showed 1-20% packet loss.
In both ways all ports on the switches connected to the tested equipment were configured alike.