Audio Features
> HD voice: HD handset, HD speaker
> Codecs: G.722, G.711(A/μ), G.723.1, G.729AB, 
G.726, iLBC
> DTMF: In-band, Out-of-band(RFC 2833) and SIP 
INFO 
> Full-duplex hands-free speakerphone with AEC
> VAD, CNG, AEC, PLC, AJB, AGC

Phone Features
> 6 VoIP accounts
> Call hold, mute, DND
> One-touch speed dial, hotline 
> Call forward, call waiting, call transfer
> Group listening, SMS
> Redial, call return, auto answer
> Local 3-way conferencing
> Direct IP call without SIP proxy
> Ring tone selection/import/delete
> Set date time manually or automatically
> Dial plan 
> XML Browser 
> Action URL/URI
> RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)

Directory
> Loal phonebook up to 1000 entries
> Black list
> XML/LDAP remote phonebook
> Intelligent search method
> Phonebook search/import/export
> Call history: dialed/received/missed/forwarded

IP-PBX Features
> Busy Lamp Field (BLF)
> Bridged Line Apperance(BLA)
> Anonymous call, anonymous call rejection
> Hot-desking, emergency call
> Message Waiting Indicator (MWI)
> Voice mail
> Call park, call pickup
> Intercom, paging
> Music on hold
> Call completion
> Call recording

Display and Indicator
> 320x160-pixel graphical LCD with backlight
> LED for call and message waiting indication
> Dual-color (red or green) illuminated LEDs for 
line status information
> Intuitive user interface with icons and soft keys
> National language selection
> Caller ID with name, number

Feature keys
> 48 keys including 16 freely programmable keys
> 8 features keys: message, headset, hold, mute, 
tran, redial, conf, hands-free speakerphone
> 4 context-sensitive “soft” keys
> 6 navigation keys
> Volume control keys
 

attendant console application

Other Physical Features
> External universal AC adapter (optional): 
AC 100~240V input and DC 5V/1.2A output
> Power consumption (PSU): 1.3-2.1W
> Power consumption (PoE): 1.8-3.1W
> Dimension(W*D*H*T):
273mm*200mm*158mm*58.5mm
> Operating humidity: 10~95%
> Operating temperature: -10~50°C

Management
> Configuration: browser/phone/auto-provision
> Auto provision via FTP/TFTP/HTTP/HTTPS
for mass deploy
> Auto-provision with PnP
> Zero-sp-touch, TR-069
> Phone lock for personal privacy protection
> Reset to factory, reboot
> Package tracing export, system log

Network and Security
> SIP v1 (RFC2543), v2 (RFC3261)
> Call server redundancy supported 
> NAT transverse: STUN mode
> Proxy mode and peer-to-peer SIP link mode
> IP assignment: static/DHCP/PPPoE
> 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 
> Transport Layer Security (TLS)
> HTTPS certificate manager
> AES encryption for configuration file
> Digest authentication using MD5/MD5-sess
> OpenVPN, IEEE802.1X
> IPv6

Package Features
> Qty/CTN: 5 PCS
> N.W/CTN: 6.9 KG
> G.W/CTN: 7.6 KG
> Giftbox size: 285mm * 240mm* 110mm
> Carton Meas: 580mm*295mm*250mm