VoIP phone adapter with 2FXS

WSS2110E VoIP Phone adapter with 1 FXS phone and 1 Lifeline ports, and WAN + LAN Router/Bridge, support VPN client, Compatibles with the popular IPPBX and Softswitch like VoIPSwitch, Asterisk, SER Voice FeaturesSupport SIP 2.0 and correlative RFCsSupport IAX2(optional)SIP supports 2 SIP servers, pubic and private server. Can connect to public SIP server and private SIP server at the same timeCodec G.711A/u, G.729,G.729a/b, G.726-32kEcho cancellation: G.168 Compliance in LECSupport Voice Gain Setting, VAD, CNGNAT transverse: support STUN clientSIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/IP callSupport choose line automatically, using private server to dial automatically when public server disconnectedDTMF Relay support in-band, SIP info, RFC2833SIP application support call forward/ transfer/ holding/ waiting/ conferenceCall control features: flexible dial map, hotline, empty calling No. reject service, black list for reject authenticated call, limit call, no disturb, caller IDSupport T.38Network FeaturesWAN/LAN support bridge and router modelSupport PPPoE for xDSL and auto reconnect after disconnected by serverSupport basic NAT and NAPTSupport DHCP client on WANSupport DHCP server on LANSupport UPnPSupport IGMP Proxy/IGMP SnoopingSupport ping test with keypad-commandSupport main DNS and secondary DNS serverSupport DNS Relay/ PPPoE RelaySupport NTP ClientSupport Firewall/ StatefulPacketInspection(SPI)Support Webs URL Filter/Content FilterSupport MAC/IP/Port FilterSupport VPN (L2TP/PPTP)Support open VPN(Optional)Support VLAN(802.1Q/P) and VLAN Switch modeQoS with DiffServ(Optional)