If you have a “corded” phone, then yes your landline telephone will work during a power outage. If you have a “cordless” phone, then it will not work, because a cordless phone requires electricity to transfer the signal from the base to the handset.

Do telephones require electricity?

A traditional corded phone does not require electricity and will continue to operate through an extended power outage. ... The use of corded, landline phones is not antiquated. It's about being smart, empowered and prepared to ensure your family can communicate in the event of a power outage.

Do phones work when the power is out?

A phone will work as long as it is getting between 6 and 12 volts at about 30 milliamps. In other words, it takes very little power to operate a telephone. ... If the power goes out, the batteries and generators keep the office fully powered. Therefore, all of the phones connected to the office are fully powered as well.