Security: User and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, TLS, 128/256-bit SRTP, HTTPS, 802.1x media access control, QoS: Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS, Telephony Features: Hold, forward (unconditional/no-answer/busy), downloadable phone book (XML, LDAP), call waiting, call histo- ry, flexible dial plan, personalized music ringtones, server redundancy & fail-over, Dual-Stream: BFCP, video resolution (up to 4K
[email protected]) + content resolution (up to
[email protected]), Audio Features: AEC, ANS, AGC, Noise Shield, PLC, CNG/VAD, Video Features: FEC, dynamic display layout, picture-in-picture, picture-outside-picture, digital caption, Auxiliary Ports: 2x USB 2.0, micro-SD, Reset,