1. Hardware specifications
   
Processor Unit
    ARM7TDMI RISC Core based MCU(72MHz)
    2MB Flash
  8MB SRAM (Expandable up to 16MB)
     
WAN Interface
    1 port 10/100Base-T Ethernet Interface
     
LAN Interface(EL4 / EL4M)
    1 port 10/100Base-T Ethernet Interface
    4 ports 10/100Base-T Ethernet Interface
     
IP telephony Gateway Interface
    Max. 4 ports configurable POTS Interface
  Tone (DTMF) Generator/Detector
  G.711 and G.723.1 (or G.729a) Voice CODEC DSP Supported
   
PSTN Back-up call
    Can call to PSTN by IP disconnection or user intention.
    Can connect directly PSTN line when AC power fail.
   
Certification
    FCC Part68, Part15 Class B
    JATE/VCCI (Japan)
     
Dimension : 240 * 220 * 40
     
  Power Supply : DC 12V/1.2A adapter
   
Operating Enviroment
    Humidity : 0 ~ 95 %
    Temperature : 0 ~ 50 ?C

2. Software specifications
   
OS : Embedded Linux
     
Network Protocols
    Transparent Bridging
  DHCP Client capability to get IP and DNS Server
  DHCP Server to assign IP to the internal terminal
  PPPoE (RFC2516)
   
IP sharing and Filtering
    NAT(Network Address Translation) supports
     
IP Telephony Gateway Protocols
    H.323 V3: H.225.1, H.245, RAS/RTCP, RTP
  SIP (RFC3543 bis03)
  G.723.1(G.729) and G.711 CODEC
  QoS (TOS, Voice priority)
   
Management Features
    System Status LED for Power Fail, WAN and LAN Link status
    Built-in Self Test