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.
Xtreme Networks, Inc. currently manufactues Voice Over IP carrier based solutions switches and IP PBX switches in the USA for North and South America and Spain for Europe. Xtreme Networks, Inc. provides cost effective solutions to the Voice Over IP market
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