I am having an issue this one of my user extensions. When a call comes in to ext #1234 it rings the phone tied to that extension, but if the phone isn't answered, it rings #5678.  If you look up extension #1234 in the corporate directory, two users show up for that extention (user tied to 1234 & user tied to 5678.) I've checked both accounts in ccm (CCM 7.1.2) and nothing reflects that either extension or user are associated.  The phone isn't forwarded, and extension mobility isn't set up.  Any ideas?