Audio Features

• HD voice: HD handset, HD speaker 
Wideband codec: G.722 
Narrowband codec:G.711(A/μ), G.723, G.729AB, G.726, GSM
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO 
Full-duplex hands-free speakerphone with
  AEC VAD, CNG, AEC, PLC, AJB, AGC

IP-PBX Features

• Busy Lamp Field (BLF), BLF list
• Bridged Line Appearance (BLA)/SCA
• Anonymous call, anonymous call rejection
• DND & forward synchronization
• N-Way calling, remote office
• Network call logs
• Message Waiting Indicator (MWI)
• Voice mail, call park, call pickup
• Intercom, paging, music on hold
• Call recording, hot-desking

Phone Features

• 3 Line or VoIP accounts
• One-touch speed dial, redial
• Call forward, call waiting, call transfer, call hold
• Call return, group listening
• Mute, auto answer, DND
• Call history: dialed/received/missed/forwarded
• 3-way conference call
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Hotline, emergency call
• Set date time manually or automatically

Directory

• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Intelligent search method
• Phonebook search/import/export
• Display and Indicator
• 2.7” 192×64-pixel 4-level grayscale Graphical LCD with backlight
• LED – call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status information
• Intuitive interface with icons and soft keys
• National language selection
• Caller ID with name, number
• Stand with 2 adjustable angles
• Wall mountable
• External universal AC adapter (optional)
• AC 100~240V input
• Power consumption (PSU): 1.4W-3.9W
• Dimension (W*D*H*T):
• 212mm*189mm*175mm*54mm
• Operating humidity: 10~95%
• Storage temperature: -10~50°C
• Feature keys
• 6 line keys with LED
• 6 line keys can be programmed up to 15
• various features (3-page view)
• 5 features keys: message, headset, mute, redial, hands-free speakerphone
• 4 context-sensitive “soft” keys
• 6 navigation keys
• 2 volume control keys
• Illuminated mute key
• Illuminated headset key

Interface

• Dual-port Gigabit Ethernet
• 1xRJ9 (4P4C) handset port
• 1xRJ9 (4P4C) headset port
• Power over Ethernet (IEEE 802.3af), Class 2

Network and Security

• SIP v1 (RFC2543), v2 (RFC3261)
• 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
• Transport Layer Security (TLS)
• HTTPS certificate manager
• AES encryption for configuration file
• Digest authentication using MD5/MD5-sess ➜ Open VPN, IEEE802.1X
• IPv6

Management

• Configuration: browser/phone/auto-provision ➜ Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
• Auto-provision with PnP
• Zero-sp-touch
• Provisioning server redundancy supported