ShoreTel Compatible Plantronics EncorePro 540 HW540 Ultra Noise-Canceling VoIP Headset Bundle for ShoreTel IP Phones: 100, 212, 230, 230G, 265, 530, 560, 560G, 565, 565G, 655 Includes all 3 wearing styles - over the head, on the ear, and behind the head