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GoIP is a series of GSM-gateways() and SIM-bank produced by Hybertone and DBL technology company. It serves to establish direct connection between GSM network and VoIP. == Usage concept == Sim-card is put into GSM-gateways (or SIM-bank connected to GSM-gateway) in order to register it in GSM network, at the same time the gateway is connected with VoIP through program switch. Accordingly the traffic can be converted in and out between GSM and VoIP channels. SIP and H.323 protocols are used for media traffic termination. GoIP equipment is compatible with all main IP PBX: Asterisk, Mera, Oktell, 3CX etc. Goip is distributed in Brazil by reidoasterisk.com.br In compare with PSTN, GSM-gateways provides drastic economy by amending the infrastructure and lowering the expenditures on technical support. GoIP includes an integral support of SIP and H.323 protocols with flexible settings. Duplex authentification of password and trust-list back-up will significantly decrease the risk of getting huge bills for telecommunication, besides it maintains an adaptable system of call transfer. Precisely, GoIP gateway supports the groups of several devices, with flexible settings of large GSM-gateways groups with different numbers of channels. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GoIP」の詳細全文を読む スポンサード リンク
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