I have been using a phone that has a line key tied to a trunk. However an issue that I am running into is that since my line key has 2 call appearances when I press the line key button while the line is busy I still get dialtone. This happens even though the BLF key is indicating that the line is busy. Is there anyway to add a config option that will stop the phone from trying to grab the second appearance even though I need it for transfers? The related part of my config is below. Thanks!