you can add up to 4 additional expansion ports using the 4-Port Expansion base card
incline installation for 4-inch fixed dome
Product comparison (Fiber)
Replaces multiple legacy protocols with this one single unified technology
J159 IP Phone IP500 you can add up toKey Features: 2 Color Displays Primary: 2. 8, 320 x 240 pixel Secondary: 2. 3, 160 x 240 pixel 10 buttons with dual LEDs (red, green) 4 softkeys Hard buttons for phone, messages, contacts, history, home, navigation cluster, headset, speaker, volume, mute. 48 administrative buttons Wideband audio in handset and headset Full duplex speakerphone Dual 10 100 1000 Gigabit Ethernet ports to support co located PC Supports optional J100 Wireless Module for