If you had a snom it would already do it for you ;)... What phone are you using again?

/b

On Nov 20, 2008, at 10:14 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?