Sell voip sip gateway

Description

WSS***0Ewith 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 Features

Support SIP 2.0 and correlative RFCs

Support IAX2(optional)

SIP supports 2 SIP servers, pubic and private server. Can connect to public SIP server and private SIP server at the same time

Codec  G.**1A/u, G.**9,G.**9a/b, G.*****2k

Echo cancellation: G.**8 Compliance in LEC

Support Voice Gain Setting, VAD, CNG

NAT transverse: support STUN client

SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/IP call

Support choose line automatically, using private server to dial automatically when public server disconnected

DTMF Relay  support in-band, SIP info, RFC***3

SIP application  support call forward/ transfer/ holding/ waiting/ conference

Call control features: flexible dial map, hotline, empty calling No. reject service, black list for reject authenticated call, limit call, no disturb, caller ID

Support T.*8                                

Network Features

WAN/LAN  support bridge and router model

Support PPPoE for xDSL and auto reconnect after disconnected by server

Support basic NAT and NAPT

Support DHCP client on WAN

Support DHCP server on LAN

Support UPnP

Support IGMP Proxy/IGMP Snooping

Support ping test with keypad-command

Support main DNS and secondary DNS server

Support DNS Relay/ PPPoE Relay

Support NTP Client

Support Firewall/ Stateful Packet Inspection(SPI)

Support Webs URL Filter/Content Filter

Support MAC/IP/Port Filter

Support VPN (L2TP/PPTP)

Support open VPN(Optional)

Support VLAN(**2.1Q/P) and VLAN Switch mode

QoS with DiffServ(Optional)

Support Webs URL Filter/Content Filter

Support MAC/IP/Port Filter

Support VPN (L2TP/PPTP)

Support open VPN(Optional)

Support VLAN(**2.1Q/P) and VLAN Switch mode

QoS with DiffServ(Optional)