I am useing a BT-200 with firmware 1.1.6.37. I am using the 3CX pbx and GWX4104 gate. I can make and receive calls. I can access voice mail via the message button on the BT-200. When the phone boots the red light works. The red light does not turn on or flass when voice mail is present. I have Subscribe to MWI set to yes on the Account page. Any ideas?