KX-T30865 is the door intercom speaker used with all Panasonic KX-T digital and analog phone systems. It can be mounted on any flat surface, or over an electrical junction box. It requires one pair of wires connected to the control unit, and has internal wire-clamp terminals for two stripped wires

The Encore headset is the most rugged Plantronics has ever designed. Sound Enhancement System™ (SES) lets you flick a  switch on the headset, to listen to a caller's normal telephone voice or to adjust the sound for a fuller, richer tone. 

Encore Monaural headsets, with sound in one ear, are lightweight and are ideal for users who may need to confer with colleagues while on the phone. For environments where users really need to concentrate on calls, the single-cable Binaural version provides greater clarity by providing sound in both ears.