We have a number of Nortel PBXs (81 and 11). Some have local Mermails and others have been recently networked to use centralized VM via CallPilot on a large Opt81. My question...can someone outline how I can determine if the TNs previoulsly used for local Mermails remain in service on the PBX event though the VM service is now provided on the CallPilot. Our vendor charges by total TNs (via LD 10 output) so I need to keep them honest. Thanks in advance.