Sell 4channels GSM VoIP Terminal SC-495 with 4SIM

Description

Key Facts For GSM - VoIP connection, Quad band **0 ***0 **0 ***0MHz; SIP protocol, Asterisk, VoIPBuster compatible, support NAT & Auto Hunting; CDMA VoIP Terminal: SC***5cdma Packing Detail Major Function: 4 x VoIP (SIP)- GSM conversion *0 sets of LAN -> MOBILE routes setting; *0 sets of MOBILE -> LAN routes setting Voice response for setting & status (dial in from mobile) For call termination (VoIP to GSM) and origination (GSM to VoIP) Standard SIP (RFC***3, RFC***1) protocol, communicates with other gateway or PC To be set on web Specification: SIP protocol: (RFC***3, RFC***1) TCP/IP: IP/TCP/UDP/RTP/RTCP/、CMP/ARP/RARP/SNTP DHCP/DNS Client、IEEE**2.1P/Q、ToS/DiffServ、NAT Traversal、STUN、uPnP、IP Assignment、Static IP、DHCP、PPPoE Codec: G.**1 u-Law、G.**1 a-Law、G.**3.1 (5.3k) G.**3.1 (6.3k)、G.**9A、G.**9A/B、Voice Quality VAD、CNG、AEC、LEC、Packet loss GSM Frequency: Dual band **0/***0MHz, Tri band **0/***0/***0MHz Quad band **0/***0/***0/**0MHz