2-Lines with 2.5' Backlit Monochrome LCD Echo Cancellation & Noise Suppression Web-Based Configuration for Easy Setup 2 x 10/100 RJ-45 Ethernet Ports Supports Over 60 Call Control Platforms Supports Polycom SDK & API Type 1 IEEE-1329 Full Duplex Audio Dedicated RJ-9 Headset Port Reversible Desk Stand/Wall Mount Includes Polycom UC Software