VIVA offers IP based Converged Communications Solutions. You may contact VIVA for SIP Trunking, IP PBX & PSTN integration, MS OCS & IP PBX integration, Managed VoIP and ''''Secure'''' VoIP.
We are Great Wave Telecom, based in Hong Kong, leading in VoIP industry. We do International Wholesale Provider & A~Z Terminationa.
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