I have a Norstar MICS 6.1 software that currently has one working PRI. I need to add another PRI to the system for site to site 4 digit dialing. We have the PRI card but do I require another PRI enabler code for this new PRI or is the enabler that is currently installed a system wide PRI enabler. In a short, do I need 2 PRI enabler key codes for 2 PRI cards. I searched the Norstar docs and couldnt find this anywhere. Thank You