asterisk users - Jul 2004 - Having * show lines in use on hard phones.

I am trying to figure out is * can be configured so that users would 
have a similar experience to what they receive on a legacy PBX.


For example, on a merlin legend (or similar PBX), I have phones that 
have shared call appearances so that my assistant can answer my calls 
or see that I am on the phone, or so that I can have one phone on my 
desk and one at my conference table.

This means that if (312) 221-1212 appears on 3 phones and is in use, 
all will indicate that.

Can * be configured so that it works that way with any hard phones? Can 
Cisco 7960 and 7970's be configured that way?

/carmi