Sell VoIP coin payphone

1). Integrate two ports router function, support bridge
   mode and router mode

2). Support basic NAT and NAPT

3). Support PPPoE for xDSL, auto redial when disconnect

4). Support DHCP client at WAN port

5). Support DHCP server at LAN port

6). Support DNS relay for LAN, can provide DNS service for
   LAN Network equipment Support several network tools:
   Ping , trace route and telnet client

7). Have three modes of WAN port IP configuration: Static,
   DHCP, and PPPoE

8). Provide firewall control for small LAN

9). Provide optional priority level for small LAN

10).Support secondly layer QoS(802.1p)