[asterisk-users] The plain old PBX functionality

[Gergo Csibra]

Hi,

back in the old analog telephony days there was "digital" PBX-es and
digital "system" phonesets. This phonesets have had many individual
illuminatable buttons connected with extensions. The PBX can show on
the buttons if some extension is ringing (blinks) or busy (constant
light), and the user can transfer the call with one touch (pressing
one of this button).

I search this functionality in Asterisk. What versions, and what
extension functions (or other settings), and what VoIP phones can do
this?

-- 
Best regards,
 Gergo                          mailto:csibra at gmail.com