I called Polycom customer support to ask about interop with other phones. Every other IP phone displays video immediately as soon as they receive it, but polycom phone have a delay of 3 seconds. The tech support did not have any knowledge about what I am talking about and kep giving me nonsense suggestions. I probed further and he said I would have to call back with the reseller. It's as if he was doing me a favor of talking to me. This is really bad. pathetic customer service and a company which doesn't care. read full review »