did you try external call forward as long as your using routing and on 4.0 ..allow line redirect and feature 4 to 9 plus number and see if that works
Pat Guido
NEXTIRAONE
Pat.guido@nextiraone.com
Formerly Nextira, formerly Williams Communications, formerly Wiltel, formerly Nortel networks, formerly Northern Telecom, formerly, Nynex meridian systems formerly Northern Telecom.