Panasonic KX-TS4100B 4-Line Business Phone System with Speakerphone - Expandable up to 16 Stations for Office & Call Center Use

These are great 4-line phones that are easy to set up and use. The interface is well designed, as is the overall look of the phones. The only problem I've discovered is that 2 of the 4 phones we ordered have handset problems. Somehow there's a "feedback" type problem on 2 which makes it uncomfortable to talk unless the receiving volume is at its lowest point, and even then it's still noticeable. I need to check with Panasonic about this, as the other 2 phones are perfect.There is a slight lag when you push the buttons, but it doesn't interfere with dialing. The intercom is easy to configure and the phone itself looks great on our office desks.