asterisk users - Jul 2005 - Sipura SIP Phones Multi-Line Appearance... How to use? |----->WAS----> NEWBIE Question: Asterisk with multiline/button phones

Still looking for some direction with this subject:

I think the term is called multi-line appearance....
Is this something that is directly supported in Asterisk?
I can't seem to find any information on it or how to actually use it....

This is where you have several sipura-841 SIP phones for example...
if someone pickes up 'line1' I'd like the light to come on on ALL
phones to indicate someone is using 'line 1' and they should NOT be able
to pick up 'line 1' so long as that 'line1' is in use by another
phone.

I'd like this to work in a SIP only environment.
We don't have actual CO lines but have several SIP accounts being used
like CO lines...

Is there a way to make these phones do this??
This is a common feature on just about any conventional phone system
'line seize' as it may be called to some...

How the heck do you do it with sip? and does Asterisk do this
readily?

Thanks!

Steve




> This is a very newb. question.
>
> Been using asterisk very happily now for several months and am considering
> getting some of those really 'cool' multi-button phones with LEDs
and
> buttons.
>
> It's unclear to me if it is a straightforward task to actually setup a
> multiline 'presence' on the phones where the LED's light up
when someone
> picks up a 'line' or is using a 'line' or puts a
'line' on hold or park
> and then would like to pick it up from another phone just by pushing
> the 'line #3' or 'line #4' button that is on hold and
lit/flashing.
>
> Is this something that Asterisk actually does with ease?
> Or is it this a really complicated thing to accomplish & setup?
>
> In particular in a sip only environment... no actual phone PSTN (pots)
> 'line's involved but with multiple SIP voip accounts to work like
'lines'
> with real PSTN phone numbers.
>
> We have several VOIP SIP accounts.
>
> Thanks & take care!
>
> Steve