If you've got a phone with a headset jack, and a need for added focus while on the phone, the DeskMate Easy Connect Bundle is an excellent headset option. It connects directly to your phone, and saves valuable desk space! For use with corded telephones with internal amplifiers, the Easy Connect Bundle offers a direct-connect option for the following phone models: Avaya: 4600, 6400 and 8400 Series Polycom: IP300, 400, 430, 500, 550, 560, 600, 650 and VVx1500Alcatel: Touch 4028, 4029, 4038 and 4068Aastra: Office 70IP, 80IP, 53i, 55i, 57i, CT, 5370IP, 5380IP, 6753i, 6755i and 6757iNortel: i2001 - i2004, Meridian, M2006, M2008, M2009, M2016, M2018, M3901 - M3905, M5006, M5009, M5112, M5209 and M5212 If you're unsure whether your phone has an internal amplifier, give us a call at 1-800-HEADSETS (1-800-432-3738), and we'll be happy to check on compatibility for you.