[Asterisk-Users] Call Parking - Set ID on return

[Asterisk User List]

We have just analog lines coming in to our Asterisk box and so no
CallerID information can be gathered, all calls look the same on the
phone display.

Once a user parks a call and the time runs out it returns the call but
keeps the original CallerID information that makes it look like it is
just another call from the outside.  The operator has to go through the
whole company greeting thing again before realizing it was a person who
was just parked.  Is there a way to set a new CallerID on that returned
call so that the operator can skip the intro and go right to asking if
they caller would like to go to voicemail instead?

Thanks
Phil Smith