Signaling
PRI,R2,SS7,Signaling,NGE SIP,IMS SIP protocol
Network interface
1 WAN,2LAN
Voice codec
G.711a/u, G.729a and G.723
IP service
DHCP, PPPOE, DNS, NTP Client/Server, SSH, FTP, HTTP/HTTPS
WAN
single WAN, double WAN
Model
SIP to E1/E1 to SIP gateway