The Polycom SoundPoint IP 550 is our most highly recommended phone. Perfect for any business VoIP environment, the device has ten feature access keys and revolutionary HD Voice technology. With unrivaled call clarity, and an enormous 320 x 160 pixel backlit graphical LCD display, the IP 550 creates an ideal VoIP phone solution for high volume users.
Click on the video below to learn how this popular VoIP phone can help your business.

How does this phone compare to the Cisco 310?
The WIP 310 is more mobile, this phone is meant for the desk. It also has more features and a lerger display. It is my understanding the WIP works like a cell wherever their is internet connection.
I’ve always like this phone. As far as IP phones go it doesn’t get much better. The 300 is also a good cheaper option.
I like these videos. Good brief overviews of the products.
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This is a great phone! Haven’t heard a complaint yet.