Protocols/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP*, IPV6 Network interfaces Two switched 10/100/1000 Mbps Gigabit Ethernet ports with auto-sensing and PoE support Screen TFT color LCD screen 2.8 inches (320x240) Function buttons 6 line buttons and up to 4 SIP accounts, 4 XML programmable context-sensitive on-screen buttons, 5 navigation/menu buttons, 11 special function buttons: MESSAGE (with LED indicator), PHONEBOOK, TRANSFER, CONFERENCE, HOLD, HEADSET, MUTE SOUND, SEND/REDIAL, SPEAKERPHONE, VOL+/VOLUME+, VOL-/VOLUMEAdditional RJ9 headset port (EHS support when using Plantronics headsets) Speech Codecs and Features Support for G7.29A/B, G.711µ/a-law, G.726, G.722(wide-band), G723, iLBC, OPUS, in-band and out-of-band DTMF(in audio, RFC2833, SIP INFO), VAD, CNG, AEC, PLC, AJB, AGC Telephony Features Hold, Transfer, Forward, 3-way conference, Call Park, Call Pickup, Twinned Lines (SCA)/(BLA), Downloadable Phonebook (XML, LDAP, up to 1000 entries), call waiting, call log (up to 2000 entries), XML screen personalization, auto-dial on hook, auto answer, push to call, flexible dial plan, shift work, personalized ringtones and melody on hold, failover to the backup server in case of failure HD Audio Yes, high-resolution audio in the earpiece and speakerphone with support for wideband audio Base Yes, 2 positions available, wall-mountable (Wall-mount kit sold separately) QoS Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS Security User and administrator level password, MD5 and MD5-sess-based authentication, configuration file with 256-bit AES encryption, SRTP*, TLS, 802.1x media access control, secure Loading.. Supported languages English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Chinese, Korean, Japanese and other languages Update/Configuration Firmware update via FTP/TFTP/TFTPS/HTTP/HTTPS, bulk configuration using GDMS/TR-069 or XML configuration file with AES encryption. Power and energy efficiency Universal power adapter: Input: 100-240V; Output: +5V, 0.6A; Powered by Ethernet (802.3af) IEEE 802.3az Ethernet energy efficiency Max. Power consumption 3W (power adapter) or 3.8W (PoE) Temperature and Humidity Operation: 0°C to 40°C Storage: -10°C to 60°C Humidity: 10% to 90% non-condensing Package contents GRP2613 phone, handset with cord, stand, 5V network adapter, network cable, quick installation guide, GPL license Dimensions and weight Dimensions: 203mm x 193mm x 52.1mm; Device weight: 554g; Package weight: 936g Compliance FCC: Part 15 Class B; FCC Part 68 HAC CE: EN 55032; EN 55035; EN 61000-3-2; EN 61000-3-3; EN 62368-1 RCM: AS/NZS CISPR32;AS/NZS 61000.3.2; AS/NZS 61000.3.3;AS/NZS 62368.1; AS/CA S004 IC: ICES-003; CS-03