Corded Telephone - Connect to the receiver with telephone line and use cable to the transmitter and exchange, then you can start to use it. Multi-function - Compatible with DTMF/FSK Caller ID, it can work all over the world. And 16 Digit LCD/Last Number Redial/30 Incoming Calls Memory/9 Outgoing Calls memory/Tone /Pulse Dialing Mode Selectable/Checking, erasing and call back for Incoming and Outgoing Calls/Local Area Code Setting up to 8 - Digits, etc. Wall Mounted Phone - Can be mounted on the wall, lightweight and white and simple appearance telephone that can be as decor. Ringtone Level - You can adjust the ringtone level using the "Switch" on the back of the phone, switch to "l" for low volume, "h" for high volume. Wide Application - Compact size and convenience design, suitable for home, office, hotel guest room, café room, etc.