@Borser
Read my post again attentively.
Look in to attached picture carefully.
Please leave such genious answers, like: look in to documentation to your self.

How to make this work?

added icon

untar parkbutton.tar to:

/var/www/html/fop2/admin/plugins/parkbutton

put park.png to:
/var/www/html/fop2/images/toolbar

For now i use CALLERID(name) to identify whos park a call, but, i think, it is not a good solution

[fop2-park]
exten => _X.,1,Set(ARRAY(RETURN_EXTENSION,RETURN_CONTEXT,PARKBUTTON)=${CUT(EXTEN,:,1)},${CUT(EXTEN,:,2)},${CUT(EXTEN,:,3)})
exten => _X.,2,GotoIf($["${PARKBUTTON}" = "PARK/default"]?5)
exten => _X.,3,GotoIf($["${PARKBUTTON}" = ""]?5)
exten => _X.,4,Set(PARKINGLOT=${PARKBUTTON:5})
exten => _X.,5,Set(CALLERID(name)=______________${RETURN_EXTENSION})
exten => _X.,6,Park(,${RETURN_CONTEXT},${RETURN_EXTENSION},1,s)

I have downgrade asterisk to version 11.25.1. For now, When call came to queue and agent answered the call, when parking (through fop2) a call happened this:

-- Executing [999,from-internal,PARK/default@fop2-park:5] Park("Local/999@from-queue-0000000f;2", ",from-internal,999,1,s") in new stack

If call not came to queue (intercepted from trunk by agent), when parking (through fop2) a call happened this:

-- Executing [999,from-internal,PARK/default@fop2-park:5] Park("SIP/dsi-00000008", ",from-internal,999,1,s") in new stack

And in this case, Park works correct.

Differense is what fop2 trying to park:

Local/999@from-queue-0000000f;2

or

SIP/dsi-00000008

Update for Russian translation.
Put attached file to:

/var/www/html/fop2/admin/plugins/fullwallboard/lang/

List of waiting calls still have encoding problem

How to make this work?

what if just ignore incall state?