[asterisk-users] Display Caller ID of called party

[Dan Austin]

Alex wrote:
> It seems to me that what you are really talking about 
> is manipulating the display features of the phone.  
> Caller ID is unlikely to have this effect as the phone
> does not consider the From: URI in the SIP header unless 
> the call is of an incoming nature.

This feature is often referred to as 'Called Party 
Identification'.  There is a patch on the bug tracker that
implements it for chan_sip and chan_skinny.

> The solution to this is bound to be proprietary to the phone
> in some way or another--if there is one.  I just wanted to
> point out that the mechanism for its delivery would almost
> certainly not be caller ID.
Semi-proprietary.  A good number of SIP endpoints support it.
SCCP endpoints support it, and in theory some H323 endpoints
support it.

> Of course, you COULD always set your dial plan in such a way 
> that it never actually completes the outbound call leg, but
> instead hangs up, and then dials it, and rings you back (with
> the caller ID of the intended "incoming" leg).

The current patch in the bug tracker does require dialplan
edits.  Deeper changes would be required in Asterisk to allow
it to lookup a called party to see if it was a local extension
and use its caller-id for this.

Dan