said by robman50:
Where could the ground water come in to the phone line? By the pedestal?
The buried Bell drop wire is a round wire about 5/16 inch in diameter (8mm); usually has 2, 3 or 6 pairs of wires and is classed as direct bury. Direct bury cable can be buried in the ground without additional protection.
Telephone cables are supposed to be buried a minimum of 18" into the ground. Grading changes can result in the phone wire just under the sod (1/2 to 1 inch deep) or over 3 feet deep. It is not uncommon for buried lines to be 6 inches to a foot deep and run through flower or vegetable gardens resulting in the jacket and other insulation being cut with a shovel. Animals that live in the ground, rodents (voles & moles), gophers, chipmunks etc. can also chew holes in the insulation.
In short, any water soaking into the ground could cause a problem anywhere along the length of the portion of the wire that is buried.