The BT Converse 2100 Telephone is a perfect corded telephone system. It features 3 quick dial memories for frequently contacted people. This PBX compatible phone has 3 unique ringtones for customization, and an inductive coupler. It can also be wall-mounted, ideal for space-saving in offices or homes. The telephone is PBX compatible and includes a message waiting indicator and a call indicator light. A secrecy button allows for muting during calls. This product comes in black. Batteries or power supply are not required.