It used to be that there was never a phone around the house where you needed it to be. Cordless phones have almost eliminated that situation, but it has brought new problems and dilemmas with it.
Cordless phones are worthless if they can’t even be found. Some do have a page button that lets the base call the handset, but not all. More often than not, it is only the incessant beeping of the low battery warning that leads you to the hiding place.
Cordless phones have to be charged. The batteries can last for a while off the base, but not forever. It usually waits until you are on an important phone call before it starts beeping its way down to a dead line. Then you have to hope you can find the other phone before it gets to that point.
Cordless phones have to have electricity. When the power goes out, so does the phone. Unless you have a backup line (my father in law keeps an old rotary dial phone for just such occasions), you can’t even call the electric company to tell them you have no power.
Cordless phones have to be plugged into a phone jacks. Even though there is that freedom to roam around the house with the phone, it’s still locked into the lines that have been run by the phone company. In most instances, having another phone meant paying the phone company to come out and run a new line.
Here enters the multi-handset cordless phones. There best ones I have seen have a main unit (which is corded just in case of that power outage) but has up to four additional handsets that can be placed through out the house with out the need of additional phone jacks.
These phones can page one another, allow for conferencing between phones (think of a walkie-talkie), and some allow one handset to listen in to another handset (great in a pinch for a parent who needs an extra monitor for the night for that sick child).
Cordless phones are a true modern miracle. The additional technology of the multi-handsets are just icing on the cake.