It is not a stable solution. Cisco's operating system sucks. Their bug reporting is one of the worst in the network world.

So users have to suffer before Cisco fix finds a problem. In comparison, the competitors look for problems before bringing their customers down. That's the biggest problem I've had with Cisco.

It was stable. So, I would rate the stability a ten out of ten.

Cisco TelePresence is a stable solution. 

Cisco TelePresence has been stable during our meetings.

It is quite a stable endpoint. All devices are very handy.