Yealink A30 MeetingBar Zoom Certified,Double Web Cameras with 8 Microphones and Speakers, Wide Angle, Auto Framing, Speaker Tracking, Audio and Video Conferencing System for Medium Conference Room EAP330 has 112 DDS keys as

has 112 DDS keys as opposed to 127 in the X7 and has a  screen definition of 1024*600 LCD (X7 is 800*480)

the DHLC and DLC cards in the KX-TDA600/TDE600

2K MAC address table

(PL-84757-01) - Audio Codecs: G

built-in LED infrared illuminator you can see up to 100 feet

Yealink A30 MeetingBar Zoom Certified,Double Web Cameras with 8 Microphones and Speakers, Wide Angle, Auto Framing, Speaker Tracking, Audio and Video Conferencing System for Medium Conference Room EAP330 has 112 DDS keys asTwo Camera Design: Yealink A30 Professional all in one video bar features a wide angle camera with 122 field of view & a telephoto camera, picks up all the participants (up to 12 participants). 10x hybrid zoom support and a large sensor provide exceptional detail. The web camera comes with face brightness automatically optimized technology which can be used in low light conditions effectively. 8 MEMS Microphone Array and 2 Speakers for Full duplex