Features: 1) Network Interface Setup Wizard for DHCP,PPPoE,or Fixed IP Network environment 2) Auto Configuration Support (Plug-n-Play operation - requires no user setup when network access is available.) 3) Smart Firmware Management Support (No need for manual firmware upgrade) 4) Compatibility in multi-vendor open architecture VoIP networks 5) Dynamic DNS (DDNS) Support for the use of domain name instead of IP address 6) NTP and redundant DNS Servers Support 7) NAT/Firewall Traversal Support with Border Session Controller or Stun Server