Two SIP accounts
Two FXS ports
One FXO life line port
One WAN port
One LAN port
Standard SIP V2 protocol
Three-party conference
CLIP
PPPoE
Auto configuration
Call waiting
Call transfer
Codec selection
DHCP client
Dial plan
Peer to peer calling
NAT and STUN
Web-based programming tool
Voice activity detection
Echo cancellation
SIP FXS, VoIP ATA Gateway with Call Waiting