Supports TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP/RARP, DNS, DHCP (both client and server), PPPoE, TFTP etc
Built-in router, NAT and Gateway
Supports SIP
Multiple(1/2/4/8/16/24) FXS and necessary FXO ports with independent telephone numbers
Simultaneous signaling and media encrypting and mangling
Free access to customer network
Intelligent voice routing and discovery
Interoperable ...
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