When a call comes into our switchboard they are answered by our two operators using 2250's. When they transfer to SOME phones the call will not goto voice mail if busy or unanswered, It just recalls back to them. Most go just fine. These same phones forward to voice mail just fine on a internal call, external direct call, or a external call transfered from some other phone other then the switch board. This has just started happening in the last week or so, any ideas would be great. Thanks