| Audio features • Optima HD voice
 • 10-feet (3-meter)microphone pickup, can be applied
 to medium-sized conference room
 • Built in 3-microphone array, 360 degree voice pickup
 • 112 mm diameter and 2.7w speaker
 • Full-duplex speakerphone with AEC
 • Echo cancellation tail length is up to 320ms
 • Background noise suppression
 • Codecs: G.722, G.711(A/µ),G.729AB, iLBC
 • DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO
 
 • VAD, CNG,PLC, AJB, AGC 
 Phone features• 1 VoIP account
 • Call hold, mute, DND
 • Call recording, hotline
 • 5-way conferencing calls
 • Redial, call waiting, emergency call
 • Call forward, call transfer, call return, dial plan
 • Ring tone selection/import/delete
 • Set date time manually or automatically
 • Volume adjustment
 
 
 Directory•Loal phonebook up to 1000 entries
 • XML/LDAP remote phonebook
 • Intelligent search method
 • Phonebook search/import/export
 • Call history: dialed/received/missed/forwarded
 • Black list
 
 
 IP-PBX Features• Intercom,  multicast paging
 • Anonymous call, anonymous call rejection
 • Voice mail, distinctive ringtone, call pickup
 
 
 Display • 192x64-pixel graphical LCD with backlight
 • 24 total keys: 4 softkey, off-hook key, on-hook key,
 redial, mute, volume key, 3 navigation keys
 • Phone lock
 • National language selection
 • Caller ID with name, number
 • LCD display logo
 
 
 Interface• 1xRJ45 10/100M Ethernet port
 • Power over Ethernet (IEEE 802.3af ), class 0
 • 2xEX mic port
 • 1xUSB2.0 port
 • 1xmobile phone/PC port: 3.5mm
 • 1xSecurity lock port
 
 
 Network and security• SIP v1 (RFC2543), v2 (RFC3261)
 •SIP server redundancy supported
 • IPv4/IPv6
 • NAT transverse: STUN mode
 • Proxy mode and peer-to-peer SIP link mode
 • IP assignment: static/DHCP
 • HTTP/HTTPS web server
 • Time and date synchronization using SNTP
 • UDP/TCP/DNS-SRV(RFC 3263)
 • QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS, DSCP
 • SRTP for voice encryption
 • Transport Layer Security (TLS)
 • HTTPS certificate manager
 • AES encryption for configuration file
 • Digest authentication using MD5/MD5-sess
 • OpenVPN, IEEE802.1X
 
 
 Management• Setup wizard
 • Configuration: browser/phone/auto-provision
 • Auto provision via FTP/TFTP/HTTP/HTTPS for mass
 deploy
 • Auto-provision with PnP
 • Zero-sp-touch, TR-069, SNMP
 • Reset to factory, reboot
 • Package tracing export, system log
 
 
 Other physical features• 4 context-sensitive “soft” keys
 • External universal AC adapter (optional):
 AC 100~240V input and DC 5V/2AOutput
 • Power consumption (PSU): 2.8-5.6W
 • Power consumption (PoE): 3.9-8.1W
 •Dimension(W*D*H): 320mm*260m*52mm
 • Operating humidity: 10~95%
 • Storage temperature: -10~50°C
 
 
 Package features• Qty/CTN: 5PCS
 • N.W/CTN: 8.9KG
 • G.W/CTN: 9.9KG
 • Giftbox size: 334mm*365mm*96mm
 • Carton Meas: 500mm*379mm*342mm
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