SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP

Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports, integrated PoE

132 x 64 backlit graphical LCD display

13 dedicated function keys for MUTE, HEADSET, TRANSFER, CONFERENCE, SEND and REDIAL, SPEAKERPHONE, VOLUME, PHONEBOOK, MESSAGE, HOLD, PAGE/INTERCOM, RECORD, HOME

Support for G.711μ/a, G.722 (wide-band), G.723 (pending), G.726-32, G.729 A/B, iLBC (pending), Opus (pending), in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC

call waiting, call history (up to 200 records), off-hook auto dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized music ringtones, server redundancy & fail-over

RJ9 headset jack (allowing EHS with Plantronics headsets)

Yes, 2 angled positions available, wall mountable

Yes

Layer 2 QoS (802.1Q, 802.1P) and Layer 3 QoS (ToS, DiffServ, MPLS)

User and administrator level access control, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control

English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, simplified and traditional Chinese, Korean, Japanese and more

Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-069 or AES encrypted XML configuration file

Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA PoE: IEEE802.3 af Class 2, 3.84W-6.49W

Yes, HD handset and speakerphone with support for wideband audio

Dimension: 220.5mm (L) x 192.5mm (W) x 76.0mm (H) (with handset) Unit weight: 0.8kg; Package weight: 1.2kg

Operation: 0°C to 40°C, Storage: -10°C to 60°C , Humidity: 10 to 90% Non-condensing