I have a SPA508G, and I have gotten BLF to work great on unused lines, and I am trying to figure out how to set up BLF status on an extension or line in use. What I mean by this is I have an extension set up and in use, and I would like to assighn the status light to a different extension displaying the status of that line, not the one I am on. The admin manual only give instuctions on assighning BLF to unused line buttons on the phone. Any help or ideas would be appreciated.