I have a customer who has about 8 lines on 2 408 gs/ls/mlx modules. Line 5 is always offhook, even though no one is using it. When I first got there I listened on the line and just heard clicking. I restarted the system and then I heard dialtone on the line followed by the sound you hear when the handset is off the hook for too long. Something is taking this line offhook. Is there a way to find out what port/extension is taking the line off hook? I tried disconnecting each extension and watching a button associated with Line 805 and never saw it go on hook. I was also noticing the clicking on the line, so I disconnected each line until I didn't hear clicking anymore. I found the line that was making the clicking sound but it did not get rid of my line going off hook problem. Any help would be greatly appreciated. Thanks!