Simple solution: Go around and make a list of everyone and their extension number. Don't worry about the port. Before you reinstall pull the X-Conn's for the sets and after reinstall just match the extension numbers with the proper port...Ex: Mary had ext 229 port 101. After the system boots up then start connecting the extensions. Mary will go on port 109 and have her proper ext number.

Scientists say that the universe is made up of Protons, Neutron & Electrons. They forgot "Morons".
Dave. (CTUB) Canadian Techs Use Bix!