Differences in hardware capabilities include the following: Different models have screens with different resolution, size, color, and touchscreen capabilities. Other Type B phones require a high-fidelity handset upgrade to support the G. Different phone models support different speeds on the PC and switch port of the IP phone. The number of IP phone buttons differs per phone model. Most Cisco IP Phones offer speakerphone and headset support. The number of lines varies per phone model from one to eight. CCIE[…]
