Does anyone know how to set up three digital ports on a TN2214 card for a polycom view station 512. I have found a previous post from user that says you can have two PDM for each digital port. However, when I try to select yes to allow for a "secondary data module" on a PDM data-module I get the error "cannot administer secondary data module first". Am I setting this up correctly??? What do I need to do? Please help.