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4 years old
Problem started one month ago
We do use all the other lines and they do work properly.
The issue moved to line 4.
Line 4 still does not have a dial tone after swapping out the phone jacks.
Yes - I did swap the other end of the 2 phone cords and found the issue on line 4 still. The problem is still on line 4.
I made the swap and the issue is with line 2.
We have 5 cordless phones which have access to all 4 lines and none of them have a dial tone on line 4.
No other phone jacks have line 2 service