8 Port Fxs VOIP Gateway

We are offering 8 port fxs voip gateway.
functions and features:
connect pbx, gsm/cdma fwt to the ip core network,;
work with service platform to provide various telephone supplementary services;
support sip and mgcp protocols;
support fxo/fxs interfaces;
support static ip address configuration or dynamically obtain an ip address through dhcp and pppoe;
support g.711, g.729a, g.723.1, gsm, ilbc;
support echo cancellation;
support digitmap;
support intercom;
support full-capacity concurrent calls;
support t.30/t.38 fax mode;
support multiple local and remote maintenance & management modes such as web, telnet, auto-provision, and tr069 clinet;.
support several encryption methods;
support call progress tones for various countries and regions;
support fxo second stage dialing or voice prompt;
dtmf digits transmit: rfc2833, info(sip)
network: pppoe, dhcp, dns,ddns,nat/stun, 802.1p, tfip, telnet etc.
protocols: sip (rfc3261, rfc3262,rfc3311,rfc3323,rfc3325).