VoIP, Gateway, SIP manufacturer / supplier in China, offering Dwg2000-16g GSM/CDMA Gateway SIP & MGCP, Support SIM Bank 16 Ports GSM VoIP Gateway (UC2000-VF-16G), 4* E1/T1 VoIP Telecom Trunking Gateway for Call Center (MTG200-4E1) and so on.
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