asterisk users - Jun 2005 - Extension 'hint' info please?

I have a Polycom 500 and would love one of the line-appearance keys to
show me if a certain person/people are on the phone upstairs.  This
'hint' priority seems to have little-to-no documentation.  So, if anyone
out there has a clue about this, here are a couple of questions:

Can you 'hint' Zap and IAX2 extensions?

Can you concatenate extensions together? 
(i.e. exten => 200,hint,SIP/101&SIP/202&Zap/4)

And the big one is.....


...how does this work on a Polycom 500?


Chris Coulthurst
chris@shuksan.com

--On Saturday, June 04, 2005 10:41 PM -0700 Chris Coulthurst 
<asterisk@shuksan.com> wrote:
> I have a Polycom 500 and would love one of the line-appearance keys to
> show me if a certain person/people are on the phone upstairs.  This
> 'hint' priority seems to have little-to-no documentation.  So, if
anyone
> out there has a clue about this, here are a couple of questions:
>
> Can you 'hint' Zap and IAX2 extensions?
>
> Can you concatenate extensions together?
> (i.e. exten => 200,hint,SIP/101&SIP/202&Zap/4)
>
> And the big one is.....
>
>
> ...how does this work on a Polycom 500?
>
And how does it work on a Cisco 7960?