Hello,

1) I'll complete russian translation files soon and send them to you

Thanks!

2) I have an extension desctibed in buttons.cfg with some specific label, but this extension displayed with label from Asterisk server. Is it possible that FOP2 takes label for extension from Asterisk if this extension is a member of queue?

Yes, queue members will be renamed with the member name as set in the queue.

3) buttons.cfg file has a very plain and straightforward structure. Is it possbile to use mysql table for buttons? It also gives a good possibility to take buttons description from mysql Asterisk Realtime config.

You can use #exec to execute your own button configuration script, taking it out from anywhere you want as it is just a plain script. Example is the provided autoconfiguration for FreePBX, that takes information both from plain text files and mysql databases.

Best regards,