Hi Dimitiy. I suggest you contact Polycom Support.
They can find you a reseller who may be able to get it back under maintenance & factory default it.
If S' is 8205with the next 2 digits a later month of 2005 this should be possible.
If older I'm afraid you may be stuck with a duck & factory restore is your only option.
Riski tech support is listed here.
The toast "Na zdorovie!" ("Be healthy!" or "Vashe zdorovie!" = "Your health!") have to be proposed with a glass in your hand. We don't see such a glass here );-)))
I vam togo je!
Thanks Mike. I'm somethoing of a collector of polite & fun greetings & sign-offs for international emails.
Sooo many typos in that post of mine.
The only point I do have is How do you know I didn't have a glass in my hand at the time of posting my miss-spelt "Na zdorovie!".
Have a good day.