Software compatibility: Cisco Collaboration Endpoint Software Version 9.14.5 or later, or Cisco Webex RoomOS, Firewall traversal: Cisco Expressway technology; H.460.18, H.460.19 firewall traversal, Video standards: H.264, H.265, H.263 for TANDBERG MXP interop only, Video outputs: Two HDMI outputs support formats up to 3840 x 2160 @60 fps (4Kp @60) (in use for main displays); One HDMI output supports formats up to 3840 x 2160 @30 fps (4Kp @30) (in use for presentation display); Consumer Electronics Control (CEC) 2.0, Encode and decode: Video stream: Full HD 1080p @60; Content stream: 4K 2160p @15.