[Asterisk-Users] Re: how to show called name on calling polycomdisplay

[Noah Miller]

>  This is a function of the Phone itself. Asterisk has nothing to do with
> it as it does not know anything about the call until after the SIP
> device 'sends' it.

This is not just a function of the phone.  The phone has no idea what the
caller id of the receiving end of the call will be.  Something would have to
tell it after the call was connected.


> To my knowledge it is not posible. I don't even think a SIP standard is
> available for this.
> 
> This 'feature' along with changing CallerID Display after a call has
> been answered is something missing from the RFC.

You don't have to create some special sip method or do anything within
asterisk at all.  You could monitor calls from outside asterisk, and use
sipsak to send a special sip message back to the phone after a call was
connected.  Once you sent it to the phone the magic part would be making the
phone do something with it.

I'm glad to see the asterisk developers are tackling this as it's a nifty
little feature and it's way beyond my skills!

- Noah