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SpeedVoIP Communication Technology Co., Ltd
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4-Port VoIP Security Phone Adapter
[China]
The VGSPE 4.2 pro is an award-winning next generation VoIP Security Phone Adapter based on industry open standards. With built in our unique VGCP
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VoIP Anti-Blocking Solution
[China]
It is a proprietary layer 2 link protocol working at between IP stack and NIC driver. The core patent-pending VGCP is industry’s most
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