[asterisk-users] The plain old PBX functionality

[Steven Howes]

On 8 Aug 2014, at 06:05, Gergo Csibra <csibra at gmail.com> wrote:
> 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?

It’s called presence, it’s in every version of Asterisk you’re likely to find. Most SIP handsets support it. All of it depends on how you configure it.

Steve