✔ 最佳答案
The only way you can be hurt with a cordless phone is for lightening to directly strike you.
But on corded phones, all it takes is for voltage to get into the line at any point. That means a strike at the cable, or anything that may currently be grounded to it.
The phone company puts in a "lightening" protection device for every phone line, but over time the connections can corrode or the device itself can malfunction. Therefore you really have no guarantee that you are protected.
This also applies to not only lightening, but to any high voltage coming through the line. A car accident that strikes a joint utility pole could result in high power lines coming in contact with telephone lines, and that voltage could easily enter the home.
Now that I've scared the heck out of you, let me say that it's fairly rare for it to happen. But generally you should never use a corded phone line during thurnderstorms. Cordless or cell is best.
參考: Retired 32 years Telephone cable splicer/repairman