...We have a release 3.19 system at one of our sites. Yesterday, I was onsite changing the auto attendant and one of our employees told me that he could not answer one of the line appearances on his MLX-28D set. I checked it out and even tried replacing it, but the problem remained. The green light on the button would light up, but when I pressed the button, nothing. I used the INSPECT key and nothing came up on the display, not even BLANK. I went into WinSPM and saw that line 813 along with lines 803 and 848 were programmed on the extension (x609). There was no problem with the other two lines on the set. I changed the principal user from x677 to x609 for line 813, but that did nothing. I also checked to see if the line was in a pool and it was not. Now I am totally flabergasted. Any assistance would be GREATLY appreciated.