I have successfully set up EC 500 on many of our extensions and it works great except... we have our cell phones programmed to forward to our office voicemail if the cell phone is not answered, so if someone calls the cell phone directly and the call is ignored it will call the office Avaya system, but with the EC500 activated it then calls the cell phone # back, and so on. Is there a way to tell the Avaya system not to EC500 if it is the cell phone number calling or is there a way to direct the call directly into voicemail? Not send calls because that will over ride the EC 500.