Up to 16 SIP accountsCall hold, mute, DNDOne-touch speed dial, hotlineCall forward, call waiting, call transferRedial, call return, auto answer, direct IP call,5-way conferenceXML Browser, action URL/URIGroup listening, SMS, emergency callRing tone selection/provisioningSet date time automatically or manuallyDial plan per accountRTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)Voice Codecs

HD voice, HD handset, HD speakerCodecs: iLBC, G.722, G.711(A/μ), OpusGSM_FR, G.723, G.729AB, G.726-32DTMF: In-band, RFC 2833, SIP INFOFull-duplex hands-free speakerphone with AECVAD, AGC, CNG, AEC, PLC, AJBDirectoryLocal phonebook up to 1000 entriesXML/LDAP remote phonebookIntelligent search methodPhonebook search/import/exportCall history: dialed/received/missed/forwardedBlack listIP-PBX

Busy Lamp Field (BLF), bridged Line Appearance(BLA)Anonymous call, anonymous call rejectionMessage Waiting Indicator (MWI) , voice mailCall park, call pickupIntercom, pagingMusic on holdHot-desking

and Indicator4.3" 480 x 272-pixel color display with backlight24 bit depth colorLED for call and message waiting indicationDual-color (red or green) illuminatedLEDs for line status informationWallpaper, national language selectionIntuitive user interface with icons and soft keysCaller ID with name, number and photoWiFi/Bluetooth supportedFeature keys10 line keys with LEDPaperless DSS keys up to 36 various features8 feature keys: voice mail, headset, mute,speaker, conference, hold, transfer,redial4 context-sensitive “soft” keys6 navigation keys , volume control keysIlluminated speaker key/headset key/mute keyInterfaceDual-port Gigabit EthernetPower over Ethernet (IEEE 802.3af), class 31xRJ9 (4P4C) handset port1xRJ9 (4P4C) headset port1xRJ12 EXT port supports up to 6 Expansion ModulesPhysical

Stand with 3 adjustable angles(30°, 45°， 60°）Wall mountableAC adapter : 100~240V input and DC 5V/1.2A outputPower consumption (PSU): 2.0~4.6WPower consumption (PoE): 2.5~5.5WOperating humidity: 10~95%Operating temperature: -10~50°CManagementConfiguration: browser/LCD-Menu/auto-provisionAuto provision via HTTP/HTTPS FTP/TFTPAuto-provision with PnPReset to factory, restart, rebootLocal tracing log export, system logPhone lock for personal privacy protectionWiFi/Bluetooth

Standard: IEEE802.11b/g/nTransmission Rate: 150 MbpsFrequency Range: 2.4GHzBluetooth specification: V4.0+HSsystemEnhanced Data Rata (edr) compliant for both 2Mbps and 3Mbps supportedBluetooth frequency range: 2.402GHz-2.480GHzCompatible with Bluetooth specification V4.0 ，back compatible with Bluetooth1.1 1.2 2.0and3.0 for wide-ranging use

and SecuritySIP v1 (RFC2543), v2 (RFC3261)SIP server/proxy redundancyNAT Traversal: STUN modeDHCP/static/PPPoE/IEEE802.1X/open VPNHTTP/HTTPS web serverTime and date synchronization by SNTPDNS-NAPTR/DNS-SRV(RFC 3263)QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCPTLS(Transport Layer Security), SRTPHTTPS certificate managerAES encryption for configuration fileDigest authentication using MD5/MD5-sessIPv6 supportedPackingQty/CTN: 10 PCSPhone Size:224MM(L)*220MM(W)N.W/CTN: 14.2 KGPhonebox Size:245MM(L)*225MM(W)*100MM(H)G.W/CTN: 15.2 KGCarton Meas: 525MM(L)*510MM(W)*245MM(H)