VTech cordless systemDECT 6.0 technology Interference free for crystal clear conversations won't interfere with wireless networks and other electronic devicesProtect yourself from identity theft with digital security your call is digitzed encrypted, making it nearly impossible for someone to eavesdropExpandable up to 5 handsets using only one jack uses CS6409 accessory handsetsCaller ID/ call waiting stores 50 callsHandset speakerphone enjoy hands-free conversations on each handsetIntercom between handsetsTransfer calls between handsetsConference an outside call between handsets50 Name and number phonebook directory easily store and dial frequently called numbersVoicemail waiting indicator text message on the handset silently alerts you when you have messages waitingBacklit keypad and displayTrilingual prompts choose between English, Spanish or FrenchWall-mount bracket includedVTCS6419