VoIP SoC: CPU Core: MIPS 580Mhz
Flash: 16M Flash
RAM: 64M DDR2 SDRAM
Display: 192×64 Graphic LCD with white back light
 Large font
 Red-green dual color LEDs for call and message indication
Phone Keys: 4 soft keys
     7 function keys: MENU, HOLD, Volume+/-, Handsfree, Redial and so on.
     3 speed dial key
     12 Dialing Buttons (0~9, *, #)
     1 emergency button
Power Supply: AC/DC Adapter
                 ▽ AC Input: 100~240V, 50~60Hz
                 ▽ DC Output: 5V, 1A
        IEEE802.3af PoE in WAN port
I/O Interfaces: 2 RJ-45 ports (Ethernet 10/100 Base-T)
         RJ9 earphone jack
         3dB internal antenna for 802.11n 1T1R
         Full duplex hands-free speakerphone
         HD voice: HD handset, HD speaker
         IEEE802.3af
Environmental: Operation Temperature: 0~50 Degree C
         Storage Temperature: -25~ 85 Degree C
         Relative Humidity: 10%~90% No Condensing
         Shock: Up to 75cm (30 inches) `Drop upon Package
Audio Codec:  G.711 (A-Law, μ-Law)
       G.722
       G.723.1
       G.729AB
       Adaptive Jitter Buffer Management
       Voice Activity Detection
       Comfort Noise Generation
       Echo Cancellation
Protocols:  SIP V2 (RFC 3261,3262,3263,3264)
     Backward Compatible with RFC2543
     Session Timer (RFC4028)
     SDP (RFC2327)
     RTP/RTCP (RFC1889 and RFC1890)
     NAPTR for SIP URI Lookup (RFC2915)
     STUN (RFC 3489)
     ARP/RARP (RFC 826/903)
     SNTP (RFC 2030)
     DHCP server and client
     HTTP Server for Web Management
     TFTP/HTTP/HTTPS for Auto Provisioning
     Message Waiting Indicator (RFC3842)
     DHCP Option Codes for SIP (RFC3361)
     DNS/DNS SRV (RFC1706 and RFC 2782)
     IEEE802.1Q VLAN/802.1p and IP TOS
Applications: SMS Function
       MAC Address Cloning
       SIP proxy redundancy: dynamic via DNS SRV, A records
       Direct IP to IP calling
       Day Light Saving
       NAT Traversal: Traversal by STUN
       Built-in 100M NAT Router
       VPN: pptp,l2tp,OpenVPN
       QoS with Layer 2 and Layer 3
       DHCP Server and Client
       IP conflict detection
       Support Mutil-Vlan
       LDAP book
       Support HAC
Management:  Firmware Upgradeable
      Web Management Interface
      Password Management
      Local and Remote Syslog (RFC3164)
      Auto Provisioning: TFTP, HTTP and HTTPS
      SNTP Time Synchronization
      Multi User Level
      SNMPv2
      TR069
      Auto Provision
Call Features: 4 lines
         Auto Answer
         3-way Conference
         Music on hold
        Call Hold
        Call Forwarding
        Call Mute
        Call Transfer
        Call Waiting
        Call Pickup
        MWI
        CID and CWCID
        DTMF Relay: In-band, Out-band(RFC2833) and SIP Info
        Full-duplex Speakerphone
        Delayed Hotline
        Redial
        Dial Plan
        Volume Adjustment- Handset/Headset/ Speaker/Ringer
       High sound
Phone Feature: Customized Ring Tone
         SMS (100 records)
         Call History ( 100 records )
                  -   Most Recently Missed Calls
                  -   Most Recently Received Calls
                  -   Most Recently Dialed Numbers
         Phone book (500 records )