We have a ATA 186 with one analog line plugged in and configured as a SCCP device. We were seeing a lot of errors in the UCM event logs due to the second port not being disabled, thefore we registered the second port with UCM using the virtual mac address per the Cisco docs. I now see that both mac's are registered, however they both have the same IP address. I am wondering if this is going to be an issue when it comes to routing the call? The DN is only associated with port 1.