[Asterisk-Users] Possible to display which extensions are in use on the phone's display?

[james]

> > On our current phones (Iwatsu) we have a button on the
> > phones for each extension that lights up when that
> > extension is ringing or is in a call, so I can see at
> > a glance if one of my coworkers is on the phone before
> > I go barging into his office.  Also, if I am in a
> > coworker's office and my phone rings, I can hit my
> > extension button on his phone and answer the call. 

This is a very nice feature. I even use it on an Iwatsu ZT-D I have
installed at home. I started going down the list of features that the
ZT-D has to see if * can support the most important ones. There are a
few that I think are yet to be implemented.