Working on a Nortel Meridian Mail @ Rls12 and needing to replace the Utility Card (NT6P42AA). Can't seem to find the manual that walks thru steps to do this? Anyone know whether you can hot swap this card or not? It has a toggle switch NORM/BYP, so I assume I can set it to BYP and pull the card, then match the dipswitch settings on the old card and insert the replacement with it in BYP and then toggle to NORM but want to make sure that is correct? Currently unable to connect remotely, so thinking the Utility Card is the issue.