Line Keys - 10 line keys can be programmed up to 27 various features (3-page view). Speaker Phone - Full-duplex hands-free speakerphone with AEC. Ethernet Connectivity - Two Gigabit Ethernet ports, one of them suitable for Power over Ethernet. Display Type - 4.3 inch backlit LCD color display and LED system. Headset Support - support Bluetooth headset (Through USB Dongle) 1xRJ9 (4P4C) headset port. Compatible Platforms - SIP v1 (RFC2543), v2 (RFC3261). Contents - SIP-T46G IP Phone, Phone Stand, Wall Mount Bracket (Optional), Power Adapter (Optional), Handset, Handset Cord, Ethernet Cable, Quick Installation Guide, Quick Reference Guide, and CD-ROM. This product requires the EHS36 for EHS functionality.