One of our extensions has a personal line that goes through the merlin system and it has telco voice mail and he has a voice mail in the system as well.Some how most of his messages that are supposed to be recorded in his outside voicemail are being recorded in his internal vmail.As a test we tried it this morning we called it rang like it was supposed to and we got his outside vmail box and then we hung up , but then maybe 2 mins later we called than line again and it rang once and gave his internal greeting for his internal vmail.Why does this do this.