The Cisco 6901 VoIP phone is likely the simplest modern IP phone that Cisco deploys. It’s affordable, reliable, has a trim footprint, and is wall mountable.
The hardware is completely straightforward and easy to use. This is a handset only device and best for home or shared spaces.
The 6901 is not recommended for security checkpoints because of the lack of caller ID. However, other great features that are standard for IP phones are present without complicating the user interface.