Summary: I've had one of these phones in another office and used it for about a year. This is my second unit and the sound quality continues to be great in both phones and I've no probems with either to date. I paid a little more for this higher model to get the larger (more info) LCD display. The HD voice was very important to me as well, but I think there may be lower models that still have HD.
Summary: I got these phones on special when I ordered my VOIP PBX Cloud system, I will not say with who as they are not paying me to advertise for them, and this is a review on the phone not their service. Anyways the phone is decent. My complaints are: The phone base slides a lot on my desk and I need to solve a way from stopping it from sliding when I dial. The Power Connector when falls out a lot when I reposition my phone because of all the sliding.
Summary: It has terrible speakerphone quality. People on the other side can barely hear anything. I bought this primarily for the speakerphone. The speaker phone never worked properly. Regular mouthpiece works great. This is supposed to be HD quality voice. My cheap home phone has better speaker phone quality.
Good phone for office, speaker phone not as good as headset.
Steven M. Cohen "Steve", Amazon
18 September 2012
Summary: Good phone. I've been using it a year and a half with little to complain about EXCEPT the speaker phone quality. People on the other end say that they can definitely tell when I'm on speaker and when I'm using the headset. I've given professional talks using the phone but the talk moderators always require me to use the headset because of the muffled quality on the speaker phone. This is a minor inconvenience.
Summary: I use this phone 8+ hours a day for work. This is without a doubt the best IP phone I've ever used. Coming from using mostly Cisco IP phones (7000 series), I was a bit skeptical of going to a Polycom. But without a doubt it was a good move for me. It's half the price of a Cisco, and the speakerphone is far superior to Cisco. The people on the other end of the calls have told me the speakerphone is crystal-clear, even better-sounding than the handset.