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Wholesale 16 And 32 Ports GSM VOIP GOIP Gateway Provider Support SIP/H.323 Protocol With VPN Function

16 and 32 ports GOIP OverviewA VOIP GSM Gateway (GOIP) bridges voice communications between the GSM and the IP networks seamlessly.In principle,Website:, it consists of a GSM module and a VOIP module. With a SIM card installed, the GSM module registers to the GSM network for voice and SMS services.GOIP comes with various models of 1, 4, 8,16 and 32 GSM channels. When integrating in a VOIP system, GOIP is highly scalable in meeting customer's requirement on the number of channels (lines). In addition with its power functions, high voice quality, and low price, GOIP is an inevitable choice of many system integrators, call termination operatiors, small companies, and individuals.Hotsale is 16ports and 32 ports GSM Gateway as follow:16 ports GOIP VOIP gateway32 ports GOIP VOIP gatewayMain Functions GSM Carriers and Base Stations Optional Sending SMS / USSD via built-in webpage or SMS Server Remote SIM Auto balance check and recharge (prepaid SIM) Call time restrictions Remote Control Management Relay Server support for NAT and encryption of IP packets PPTP VPN and Relay Encryption Built-in SIP Proxy for peer-to-peer operation GSM Quad Band: 850 / 900/1800/1900 MHz Call forward from GSM to VOIP and VOIP to GSM Call BackMain Advantages: Lightweight and Portable Easy to install and administrate IMEI Changeable GSM Base Station Optional Support SIM Bank/ SIM Sever Manual/ Automatic Selection Operators Sending and Receiving SMS and USSD (Web Interface) Flexible Dial plan fo number alternation, call screen. Flexible configuration modes. All functions can be set on web. Provide CDR.Free Software/ServerRemote Control Server----Access Interface Remotely.Relay Server----Relay Encryption( Make Terminals Traversal the NAT without STUN and Outbound Proxy)SMS Server----Remote SIM cards; Send Bulk SMS; Provide CDR and ASR; Auto Balance and Recharge.SIM Server----Remote SIM Cards on Duty; Set GSM Group( Assign several SIMs per GSM Port); Set talk time per SIM, Set Day of week, time range; Monitor CDR, ASR, ACD.Autocfg Server---- Maintence all DBL termial device anywhere; embeded remote control server; Remote sim auto configuration.Protocols: SIP/H.323TCP/IP:IP/TCP/UDP/RTP/RTCP/,CMP/ARP/RARP/SNTP, DHCP/DNSClient,IEEE802.1P/Q.ToS/DiffServ. NAT Traversal, STUN, UPNP.IP Assignment, Static IP, DHCP, PPPoEBest ServiceWith a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in communication industry and other industries. Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs. What’s more,we provide best before and after sales services,24hours tech support and one year warranty. 7 days guarantee to return if any issue.


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