With any multichannel phone, look for an autoscan feature. This automatically scans all the available channels at the beginning of a call, selecting the channel with the clearest reception. Some phones offer a channel memory feature, which remembers which channel works best in a given environment for faster call placement. Generally, you can expect a phone to last four to eight hours on a single charge. More sophisticated phones generally require more power to operate and, therefore, have a shorter battery life.
Standby time refers to the length of time a phone can be used away from the base.
They range anywhere from 2 or 3 days to a week. If you expect to use a cordless phone for long periods of time, look for a model that uses a dual battery system. This will allow you to swap in a new battery rather than interrupt a conversation for recharging, which takes more than a couple of hours. Also be sure that any phone you choose has some sort of low battery indicator to avoid losing an important call. PBX Systems Regular cordless telephones can be plugged into most PBX phone systems.