Audio Features

• HD voice: HD handset
• Codec: G.711A/u, G.7231 high/low, G.729AB, G.722,
  G.726-32
• DTMF: In-band, RFC 2833 and SIP INFO
• Full duplex hands- free speaker phone with acoustic
  echo cancellation
• Voice Activity Detection (VAD)
• Comfort Noise Generation (CNG)
• Background noise suppression
• Adaptive jitter buffers
• Packet loss concealment
• SRTP
• mute

Advanced Features

• Call transfer (unattended/ attended/ semi-attended)
• Call holding
• Call waiting
• 3 way call conference
• Capable of 2 way conversation
• Join call
• Call pickup
• Call park
• Redial
• Call back
• Call completion
• Hot desking
• Auto redial
• Predial
• SIP messaging , MWI
• Flexible dial plan
• Barring function for outgoing calls
• Do not disturb
• Auto answer
• CLIR(rejects anonymous calls)
• LIP(to make an anonymous call)
• Dial without registration
• Call logs with missed calls/ incoming calls/
  outgoing calls. Each support 300 records(Web)
• Phonebook 500 records(Web)
• Speed Dial (abbreviated dialing)
• Hotline/Warm-line
• Black List/ White List
• Intercom/Intercom barge
• Password dial, DTMF hidden
• Action URL/ active URI
• Voice codec setting for each SIP line
• Multicast
• LDAP, XML phonebook
• Web dial
• Keypad lock, Emergency call

Network/ Security Features

• WAN / LAN：10/100M Ethernet ports
• Bridge mode and route
• PPPoE for xDSL
• 802.3af POE
• VLAN（Voice VLAN/Data VLAN）
• 802.1X
• NAT (NAPT)
• NAT transverse :Support STUN client
• DHCP client on WAN/ DHCP server on LAN
• Main DNS and secondary DNS server
• DNS Relay
• SNTP Client
• Firewall and DMZ
• VPN(L2TP/Open VPN)
• ping, tracert, telnet

Maintenance & Management

• WEB and telnet management
• Management with different account right
• Recover firmware and factory reset through POST mode
• Upgrade firmware via HTTP, HTTPS, FTP, TFTP
• DHCP option66 and custom option for auto provisioning
• Auto Provisioning to upgrade configuration file
  with AES(256) encryption
• TR-069 and Syslog

Physical Features

• Screen: 3.5 inch (480×320) colour screen (H5)
• Adapter Input: AC 100-240V
• Adapter Output: DC 5V/1A
• WAN Port -10/100 BASE-T RJ-45 for LAN
• LAN Port-10/100 BASE-T RJ-45 for PC
• Power consumption: IDLE: 2.5W Active: 2.8W
• Operation Temperature: 0〜40℃
• Relative Humidity: 10〜65％
• Main Chipset : Broadcom
• SDRAM: 16MB
• FLASH: 4MB
• Dimension:235 x 170 x 130mm