What kind of phone are you trying to update the display on, different phones handle this a bit differently.

Mike

On Nov 20, 2008, at 11:14 PM, Sangwoo Jin wrote:

After transferring a call, caller id is not changed with effective_caller_id_number.
effective_caller_id_number affects the caller id of first INVITE message.
But after transferring a call with REFER message, new caller id is not sent to IP phone again.
 
How do I do to send the new caller id to IP phone after a call is transferred?
 

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Gonzalo Servat
Sent: Friday, November 21, 2008 12:51 PM
To: freeswitch-users@lists.freeswitch.org
Subject: Re: [Freeswitch-users] How to change IP-Phone's calleridaftertransfering a call
 
On Fri, Nov 21, 2008 at 1:29 AM, Sangwoo Jin <swjinjin@volans.kr> wrote:
I have checked WIKI already.
But I can't find variable to change caller id of IP phone after transferring
a call.
effective_caller_id_number change the caller id of initial call, not
transferred call.

The wiki says:

effective_caller_id_number

Sets the effective callerid number. Automatically exported to originated channels. It is a var set on a channel in case it becomes the A leg of a bridge - it will use this callerid number on the B leg outbound call.


Failing that, have you tried with:

<action application="bridge" data="{effective_caller_id_number=<whatever>}sofia/....." />

?