Phone Comparison Sheet Basic GXP 1630 Advanced GXP 2135 Executive GXP 2140 Executive GXP 2170 Simultaneous Calls 3 8 4 12 11 5 Backlit Graph Color 2 x 10/100/1K MB RJ9 RJ9, Bluetooth RJ9, Bluetooth, USB PoE+AC - Yes Basic T21P E2 Advanced T27G Executive T29G T46S 2 6 16 10 Graphical 2 x 10/100 MB RJ9, USB PoE LED Keys Feature Keys LCD Ethernet Speed Headset *Power Extension Module (optional) Simultaneous Calls LED Keys Feature Keys LCD Ethernet Speed Headset *Power Extension Module (optional) *You will have to buy a separate power supply if you don't want to use PoE for Yealink Ethernet Speed Power Feature Keys Headset If your offices witch provides gigabit speeds, we recommend you choose a phone with a higher ethernet speed. You have a choice between Power Over Ethernet or AC with a power supply. PoE requires a network switch to power the devices connected to it. Each phone comes with several keys that you can customize to suit your business needs. You can use a headset with all our phones. Refer to the chart for the outlet types available: RJ9, Bluetooth or USB. Logo Here