The phone has a redial function that allows you to quickly call the last number dialed. The phone can be easily mounted on a wall, saving desk space. The Slim Corded Telephone is a versatile choice for those looking for a space-saving solution without compromising on functionality. Its ultra-compact design is perfect for limited spaces. The phone has a built-in caller ID display that allows you to see the phone number of incoming calls. LCD Display. The phone has a phone book memory that can store up to 50 phone numbers.