Telephone Training Adapter Headset Splitter for Nortel Meridican, Norstar, Avaya, Ashtra, Mitel, Polycom, Ge and Other Ip Phone

Thank you for purchasing our product, please read this manual carefully before using. Features: 1. 0 loss for signal input & output 2. Standard RJ09 input 3. Two Standard RJ09 output 4. Cable with 11in length 5. Double-call Double-control mute function, used for Call Center, training new staff or monitor Installing & Operating Instructions: Connect the headset cable to the headset interface on the device, then both persons can hear the comfortable and pleasant voice and also can speak to each other in the mean while. Press Mute button if you don't want other side to hear you. Press Mute button again if you want to regain call.