my phone says "line in use" and there is no dial tone. I have a dial tone when I plug the phone into the box outside. I do not have any phones off the hook.
I plugged my phone into the box outside to see if I get a dial tone and I do. And then I replaced the surface mount jack.
Hello & Welcome,Sorry I didn't see your question earlier.Can you tell me the Make & Model Number of the phone system(s) you are working with?Can you also tell me when this issue first began? Were there any changes in your service or wiring just before this issue?Thanks