and when someone picks up phone on 201 after 5 seconds, there’s 2 missed calls on other phones, instead of one.
I know, that it works exactly how i wrote it, but i just want to know, how can i add a few devices to first Dial step, instead of writing second one.
It looks as though using 201 for the extension and a device may be causing the issue. Try changing the extension to something else and see if that fixes it.