Thank you for your helpful reply, Cornel.
Yes, I have set up the server, it looks much better than without it.
when play with server, tech support told us not to touch 20-57.
I have tried all possibilities of 20-59-14 and 20-59-15, I think 20-59-15 is not used at all.
and if you set 20-59-14 as softphone+deskset, 20-59-15 as deskset, it looks you could get more functions which on the tool bar, such as data conference.
But I still have some issues, and I will post them later.
