A telephone has 4-step electronic handset volume control. Buy this corded telephone from deshify.com. Enjoy clear conversations with your loved ones with the Corded Telephone. This single line corded telephone has a 4-step electronic handset volume control and hearing aid compatibility. You can hang this phone on a wall to free up the desk or counter space. All the more, with just a push of a button, you can instantly call back the last dialed number. This corded phone features an elegant design that is sure to enhance the look of your home or office.