Question is why is the customer calling you instead of the TELCO? Was the inside wiring installed by you and still under warranty? Most people automatically call the TELCO because they know it will cost them nothing. If the TELCO says the problem is with the wiring and not their problem THEN they part with a few bucks and call me, but they rarely do that first.
But I digress.
Anyway, in cases where there is static, hum or other noise, crosstalk or other problems and you know the installation, don't even bother going out there, call the TELCO. 99% of the time it's their fault, ESPECIALLY if the problem is static that goes away when it isn't raining.
-Hal
