We are running a 48 user UC520. We are having an interesting issue. We have our voicemail set for the zero out option. When a caller presses that option it will be transferred to our voicemail. The caller id on the other end of the call has a hybrid of the caller id's of both the caller and our main number, except when the caller is a local number. Then the caller id of the originating call is shown without the addition of our main line. I have attached logs of each type of call. Any help would be appreciated.