Dual control with 2 mute buttons Dual volume controls Listen-in only or train/take over call Works with wired or wireless headsets or a mix Use with Headset Buddy, Agent, Plantronics, Jabra, GN Netcom, and Sennheiser headsets Works with most...

Dual control with 2 mute buttons Dual volume control Listen-in only or train/take over call Works with wired or wireless headsets or a mix Use with Agent, Plantronics, Jabra and Sennheiser headsets Works with Cisco Phones ONLY. Perfect for Call...

Dual control with 2 mute buttons Listen-in only or train/take over call Works with wired or wireless headsets or a mix Use with Headset Buddy, Plantronics, Jabra, GN Netcom and Sennheiser headsets Works with most makes of telephones with 2.5mm...