This set of three Polycom CCX 400 business media desk phones is perfect for any enterprise networking or VoIP business phone system. The phones have a sleek black design and come equipped with various features including Skype, a speakerphone, and Power Over Ethernet (PoE) technology. These phones were manufactured in 2020 with high quality standards in China and have interfaces including USB, DSL/Phone (RJ-11), and Ethernet (RJ-45). They are ideal for any office or business environment looking to upgrade their communication system.

Enhance your business communication with the Polycom CCX 400 2200-49700-025 CCX 400 Business Media Desk Phone Set of 3. This corded telephone set is designed to provide seamless communication through its features like Skype, speakerphone, and Power Over Ethernet (PoE). With its USB, DSL/Phone (RJ-11), and Ethernet (RJ-45) interfaces, this phone set is perfect for business environments. Crafted by expert manufacturers in China, this set of phones is the perfect addition to your enterprise networking and servers. Its black color and sleek design complements any office environment. Get your hands on this 2020 model Polycom CCX 400 set that is best suited for VoIP business phones and IP PBX.

I thought these would work with Ringcentral, the firmware would load then on reboot it went back to original firmware.
I bought phones from RingCentral and all good. Maybe they have a newer firmware that works now, I tried in June 2023... Just getting to listing these.... These do work with Microsoft Teams